Female Diver Discovering Green Rare Coral Reefs At The Bottom Of The Sea
Underwater diving, as a human activity, is the practice of descending below the water's surface to interact with the environment. Immersion in water and exposure to high ambient pressure have physiological effects that limit the depths and duration possible in ambient pressure diving. Humans are not physiologically and anatomically well adapted to the environmental conditions of diving, and various equipment has been developed to extend the depth and duration of human dives, and allow different types of work to be done.
In ambient pressure diving, the diver is directly exposed to the pressure of the surrounding water. The ambient pressure diver may dive on breath-hold, or use breathing apparatus for scuba diving or surface-supplied diving, and the saturation diving technique reduces the risk of decompression sickness (DCS) after long-duration deep dives.
Atmospheric diving suits (ADS) may be used to isolate the diver from high ambient pressure. Crewed submersibles can extend depth range, and remotely controlled or robotic machines can reduce risk to humans.
The environment exposes the diver to a wide range of hazards, and though the risks are largely controlled by appropriate diving skills, training, types of equipment and breathing gases used depending on the mode, depth and purpose of diving, it remains a relatively dangerous activity.
Diving activities are restricted to maximum depths of about 40 metres (130 ft) for recreational scuba diving, 530 metres (1,740 ft) for commercial saturation diving, and 610 metres (2,000 ft) wearing atmospheric suits. Diving is also restricted to conditions which are not excessively hazardous, though the level of risk acceptable can vary.
Recreational diving (sometimes called sport diving or subaquatics) is a popular leisure activity. Technical diving is a form of recreational diving under especially challenging conditions. Professional diving (commercial diving, diving for research purposes, or for financial gain) involves working underwater.
Public safety diving is the underwater work done by law enforcement, fire rescue, and underwater search and recovery dive teams. Military diving includes combat diving, clearance diving and ships husbandry. Deep sea diving is underwater diving, usually with surface-supplied equipment, and often refers to the use of standard diving dress with the traditional copper helmet.
Hard hat diving is any form of diving with a helmet, including the standard copper helmet, and other forms of free-flow and lightweight demand helmets. The history of breath-hold diving goes back at least to classical times, and there is evidence of prehistoric hunting and gathering of seafoods that may have involved underwater swimming.
Technical advances allowing the provision of breathing gas to a diver underwater at ambient pressure are recent, and self-contained breathing systems developed at an accelerated rate following the Second World War.
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Female Diver Video graphing Unknown Electric Fishes Underwater
The Devils Hole pupfish (Cyprinodon diabolis) is the rarest fish in the world. Found only in a single, tiny limestone cavern in the Devils Hole geothermal pool about 100 km east of Nevada’s Death Valley National Park, these fish have the smallest known geographic range of any vertebrate in the wild.
The Devils Hole pupfish (Cyprinodon diabolis) is the rarest fish in the world. Found only in a single, tiny limestone cavern in the Devils Hole geothermal pool about 100 km east of Nevada's Death Valley National Park, these fish have the smallest known geographic range of any vertebrate in the wild.
It’s thought that they made it to this 500,000-year-old limestone cavern when its roof caved in, exposing it and its water to the ground surface. Once inside, the fish got used to the oxygen-poor and super-warm, 33 degree Celsius (93 degrees Fahrenheit) water.
But then a decline in food resources, defects caused by reduced genetic variation and climate change bringing the water temperature up and the dissolved oxygen levels down, the population has been struggling.
Since researchers started monitoring them in the early 1970s, sending scuba divers down into the 129-metre-deep cavern to manually count each individual, the population has decreased from 200 to just 68 to 35 fish in 2013. While more recent population counts have put the number slightly higher than this, they are still at severe danger of extinction, and conservationists have pretty much resigned themselves to the fact that if another population of Devils Hole pupfish is not successfully established elsewhere, they will almost likely disappear altogether.
But of course, relocating a number of these adorable little fish - which rarely grow to more than 2.5 cm long - is easier said than done, and if the process is not carried out properly, it could see the relocated population die off, as well as the original population, having been irreparably depleted. Which is why Steven Beissinger, a UC Berkeley professor of environmental science, policy and management, set out to find the best and safest way to take fish from the Devils Hole pupfish population by performing the first model-based risk analysis for this very special species.
"Some species are critical to conserve because they serve important functions in their ecosystems, and others are important because they might be sources of new medicines, or they may have unique biological features that could inspire human innovation," Beissinger said in a UC Berkeley press release. "We don't know if the Devils Hole pupfish has or ever will serve any of these important functions, which seems unlikely as long as the species remains restricted to its single cavernous refuge. We do know that the pupfish, like all species, has a fundamental right to exist that is independent of its value to humans."
By modelling a range of different scenarios, including removing different numbers of adults, juveniles, and eggs from the Devils Hole cavern, at different times of the year over several years, Beissinger came up with the least risky move - no more than six adults were taken from the Devils Hole cavern population during the course of a year, and only during the autumn months.
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Female Diver Chasing The Lost Koi Fish Underwater
Underwater diving, also called underwater swimming, swimming done underwater either with a minimum of equipment, as in skin diving (free diving), or with a scuba (abbreviation of self-contained underwater-breathing apparatus) or an Aqua-Lung. Competitive underwater diving sports include spearfishing and underwater hockey, sometimes called “octopush.”
Underwater diving is as old as swimming and has been perpetuated into the present by pearl divers and sponge divers. Skin diving requires only a face mask or goggles, a short breathing tube (protruding from the mouth and kept above water), and flippers, or foot fins.
A wet suit, a dry suit, or the latter over the former may be used in cold water. Skin diving was first popularized in the 1920s and ’30s in the Mediterranean and off the California coast, notably by the American diver Guy Gilpatric, whose The Compleat Goggler (1938) gave great impetus to the sport and aroused the interest of the French naval engineer and diver Jacques Cousteau.
The goggles, flippers, snorkel (the name given the air tube from the German submarine air exhaust and intake device that allowed submerged operation), and face mask were all developed into their basic forms in the 1930s.
Attempts to construct diving apparatus go back to the 19th century, but the sport of scuba, or Aqua-Lung, diving dates from 1943, when Cousteau and the French engineer Émile Gagnan developed the first fully automatic compressed-air Aqua-Lung. Cousteau also did important work on the development of underwater cameras and photography and popularized the sport in Le Monde du silence (1952; The Silent World), written with Frédéric Dumas, and in other writings and television and film productions.
Clubs formed after 1943 as fast as scuba equipment became available; national associations were formed in France, Italy, Great Britain, Canada, and the United States; and in 1959 Cousteau formed, with 15 national organizations (later more than 50), the Confédération Mondiale des Activités Subaquatique (CMAS; World Underwater Federation).
The fish hunted for food and the coral hunted for ornament by primitive divers are still sought by contemporary skin divers and scuba divers. An improved spear gun devised in the 1930s is used for food hunting, and special underwater cameras are widely used for recreational and scientific purposes.
In addition, scuba diving has been useful scientifically in oceanography, in the study of fish and other marine organisms, and in the study of water pollution, as well as in the exploration of ships on the ocean floor and for salvage work, in which the earlier diving helmet with air line from on shipboard has been largely replaced.
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Koi Fishes Diving Near Coral reefs
Koi Fishes Diving Near Coral reefs , koi were commonly believed to have been bred from the common carp (Cyprinus carpio). Extensive hybridization between different populations, coupled with widespread translocations, have muddled the historical zoogeography of the common carp and its relatives. Traditionally, Amur carp (C. rubrofuscus) were considered a subspecies of the common carp, often under the scientific name C. carpio haematopterus. However, they differ in meristics from the common carp of Europe and Western Asia, leading recent authorities to recognize them as a separate species, C. rubrofuscus .
Although one study of mitochondrial DNA (mtDNA) in koi was unable to find a clear genetic structure matching the geographic populations (possibly because of translocation of carp from separate regions), others based on mtDNA, microsatellite DNA and genomic DNA found a clear separation between the European/West Asian population and the East Asian population, with koi belonging in the latter.
Some coral species, such as brain coral, are hermaphrodites, which means they produce eggs and sperm at the same time. Sexual reproduction occurs during a mass coral spawning event that, for some species, happens only once a year.
Other species, such as elkhorn coral, are gonochoric, which means they create colonies composed of either all males or all females. Within each coral colony all the polyps will produce only eggs or only sperm. For successful reproduction, the colony must rely on a neighboring colony that produces the other reproductive cell.
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Exploring Coral reefs Closely Under Water
Exploring Coral reefs Closely Under Water , Corals are found all over the world's oceans, from the Aleutian Islands off the coast of Alaska to the warm tropical waters of the Caribbean Sea. The biggest coral reefs are found in the clear, shallow waters of the tropics and subtropics. The largest of these coral reef systems, the Great Barrier Reef in Australia, is more than 1,500 miles long (2,400 kilometers).
Scientists have explored only about 20 percent of the ocean's floor, according to the National Oceanic and Atmospheric Administration (NOAA). As such, ocean explorers continue to discover previously unknown coral reefs that have likely existed for hundreds of years.
The lives of coral
There are hundreds of different species of coral, according to CORAL. Coral have a dazzling array of shapes and colors, from round, folded brain corals (named for their resemblance to a human brain) to tall, elegant sea whips and sea fans that look like intricate, vibrantly colored trees or plants.
Corals belong to the phylum cnidaria (pronounced ni-DAR-ee-uh), a group that includes jellyfish, anemones, Portuguese man o' war and several other gelatinous and stinging marine invertebrates.
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Sea Snake Under Water Communicate With Diver ' Unbelievable'
Sea snakes seem pretty cool. Although all snakes can swim, sea snakes live mostly in the water. They do need to come up for air but can stay under water for up to an hour! Wow, try holding your breath that long! Since they need air regularly they are usually found in shallow waters of the Indian Ocean, and warmer areas of the Pacific Ocean. They eat fish, fish eggs and eels that they find under rocks and in reefs.
There are about 30-50 different types of sea snakes and they belong to the Cobra family. The average Sea snake grows to about 2 meters long and has a smallish head for its body size. Their tails are flattened to make fast swimming possible and flaps over their nostrils close when they are underwater.
Sea snakes are very poisonous. The most poisonous one is the Beaked Sea Snake. Just 3 drops of venom can kill about 8 people! Fortunately, these snakes have short fangs and they are unable to bite through diver’s suits very easily. They are not likely to bite unless threatened. Their other methods of defense include to spray a stinky, musky liquid or to poop. Eew!
Underwater photography is one of the most popular diving specialties, and the rise of digital underwater photography has made it easier and more fun than ever. The Underwater Sports PADI Digital Underwater Photographer course gets you going quickly with modern digital equipment, whether you use a point-and-shoot snap camera or a sophisticated D-SLR like the pros
Other than taking someone diving, there’s only one way to show someone the sounds, motion and dynamics of the underwater world: video.Use your editing skills to share your clips with the world through YouTube, Vimeo, Facebook and more. Use your underwater videos to turn more of your friends into dive buddies.With the explosion of video cameras and desktop editing programs, becoming a filmmaker has never been so fun and easy! This class is designed to introduce you to the techniques needed to plan, shoot and edit a short film. Your Underwater Sports Camera Coach teaches you the basics and makes video fun and easy for you. Film making is a collaborative process. This will teach you how to utilize your friends in the process!
Encourage them to join you in this course as there are many more positions to being a filmmaker than simply being able to operate the camera.By teaching underwater video basics and introducing you to the power of video you will be able to document our local diving environment or get you to shoot like a pro on your next adventure.
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Adorable Female Diver Enjoys Her Time Under Water
Underwater diving, also called underwater swimming, swimming done underwater either with a minimum of equipment, as in skin diving (free diving), or with a scuba (abbreviation of self-contained underwater-breathing apparatus) or an Aqua-Lung. Competitive underwater diving sports include spearfishing and underwater hockey, sometimes called “octopus.”
Underwater diving is as old as swimming and has been perpetuated into the present by pearl divers and sponge divers. Skin diving requires only a face mask or goggles, a short breathing tube (protruding from the mouth and kept above water), and flippers, or foot fins. A wet suit, a dry suit, or the latter over the former may be used in cold water.
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Adorable Seal Animals Reactions To Ship Anchor Inside Sea
Adorable Dogfish Reactions To Ship Anchor Inside Sea , The only time you’re likely to catch sight of a seal is when it’s lounging on a beach – but in fact, they only come to land to breed, to escape predators, or in the case of the elephant seal, shed their skin.
These curious animals show many signs of complex cognition. They employ impressive means to find food and escape danger, and have even been known to push drowning pets to safety. Sadly, their great intelligence is often exploited for the purposes of entertainment.
Ok, so you knew that. But did you also know that the milk mothers provide for their pups is up to 50% fat? This accounts for their impressively quick growth. Despite their chilly habitat seals are also warm blooded - relying on large layers of fat known as blubber to keep warm.
The largest of these is the elephant seal, weighing up to 8,800 pounds! At a mere 150 lbs, the ringed seal is the smallest cousin. All species give birth to their young on land.
After all, they sometimes spend months at sea. Some can stay underwater for up to two hours, by slowing their heartbeat to preserve oxygen.
Traditionally, humans hunted seals for their meat, but they are now protected under international law and not are currently listed as an endangered species. However, they are still commonly kept in captivity. World Animal Protection believes they belong in the wild.
…But the elephant seal was once on the brink of extinction
In the 19th century, the elephant seal was hunted almost to extinction for its blubber, which produced oil. But from a colony of only 100, the population returned to around 160,000 today.
Feeding mainly on fish, squid, seabirds, shellfish and crustaceans, seals have a carnivorous diet. Some (such as the Leopard Seal) even eat other seal species.
Seals can communicate with each other effectively, using clicking and trilling noises. Different noises perform unique functions, from defending territory to warning other seals of incoming danger. A mother will create an instant bond with her pup by calling out to it.
Though seals aren’t listed as endangered, certain species are affected by hunting, lack of food and pollution. Seals are just one of the many animals at risk of severe injury from the 640,000 tonnes of fishing litter currently polluting the world’s oceans. Luckily, Our Sea Change campaign is focussed on tackling this issue, through reducing the amount of fishing litter that is entering our seas and removing that which is already there.
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Adorable Koi Fishes Knocks Out Divers Movement
In the past, koi were commonly believed to have been bred from the common carp (Cyprinus carpio). Extensive hybridization between different populations, coupled with widespread translocations, have muddled the historical zoogeography of the common carp and its relatives. Traditionally, Amur carp (C. rubrofuscus) were considered a subspecies of the common carp, often under the scientific name C. carpio haematopterus. However, they differ in meristics from the common carp of Europe and Western Asia, leading recent authorities to recognize them as a separate species, C. rubrofuscus .
Although one study of mitochondrial DNA (mtDNA) in koi was unable to find a clear genetic structure matching the geographic populations (possibly because of translocation of carp from separate regions), others based on mtDNA, microsatellite DNA and genomic DNA found a clear separation between the European/West Asian population and the East Asian population, with koi belonging in the latter.
Consequently, recent authorities have suggested that the ancestral species of the koi is C. rubrofuscus (syn. C. c. haematopterus) or at least an East Asian carp species instead of C. carpio.
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Group Of Divers React To Camera Under Water
When it comes to exploring the Earth’s oceans, scuba divers face a myriad of challenges. With a limited air supply in their tanks, divers only have a short amount of time that they can spend underwater, and when they are in great depths it can be exhausting work.
Returning to the surface can help mitigate those issues, but it also wastes a lot of time and energy, while divers also run the risk of contracting decompression sickness (aka the bends) if they rise too quickly. But a pair of veteran divers are looking to change all of that by creating an underwater tent that can serve as base camp for extended expeditions into the depths of the sea.
Diver Capture An Old Turtle On Video Under Water
Turtles are reptiles with hard shells that protect them from predators. They are among the oldest and most primitive groups of reptiles, having evolved millions of years ago. Turtles live all over the world in almost every type of climate.
According to the Integrated Taxonomic Information System (ITIS), the turtle order, Testudines (or Chelonia), splits into two suborders, Cryptogram and Pleurodira, and then further splits into 13 families, 75 genera and more than 300 species.
With so many different types of turtle, there is no average size. The largest sea turtle species is the leatherback turtle. It weighs 600 to 1,500 lbs. (272 to 680 kilograms) and is about 4.5 to 5.25 feet (139 to 160 centimeters) long, according to the World Wildlife Federation (WWF). The Galápagos tortoise grows up to 6 feet (183 cm) long and 573 lbs. (260 kg), according to the San Diego Zoo. The largest freshwater turtle in North America is the alligator snapping turtle. It can grow to 2.5 feet (80 cm) long and weigh as much as 200 lbs. (91 kg). The Yangtze giant softshell turtle is the largest softshell turtle. It measures up to 3.6 feet (1 m) across, and weigh up to 309 lbs. (140 kg).
One of the smallest turtles is the speckled Cape tortoise, according to the San Diego Zoo. Its shell is 3.1 inches (7.9 cm) long. It weighs about 5 ounces (142 grams).
"Turtle," "tortoise" and "terrapin" are often used interchangeably as synonyms, but there are distinct differences between the types of chelonians, according to the San Diego Zoo.
Turtles spend most of their lives in water. They are adapted for aquatic life, with webbed feet or flippers and streamlined body. Sea turtles rarely leave the ocean, except to lay eggs in the sand. Freshwater turtles live in ponds and lakes, and they climb out of the water onto logs or rocks to bask in the warm sun.
Tortoises are land animals. Their feet are round and stumpy, adapted for walking on land. They also dig burrows with their strong forelimbs, and slip underground when the sun gets too hot.
Terrapins live on land and in water, usually in swamps, ponds, lakes and rivers.
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Diver Explore Fishes Living Inside Coral reefs
Coral reefs are large underwater structures composed of the skeletons of colonial marine invertebrates called coral. The coral species that build reefs are known as hermatypic, or "hard," corals because they extract calcium carbonate from seawater to create a hard, durable exoskeleton that protects their soft, sac-like bodies. Other species of corals that are not involved in reef building are known as “soft” corals. These types of corals are flexible organisms often resembling plants and trees and include species such as sea fans and sea whips, according to the Coral Reef Alliance (CORAL), a nonprofit environmental organization.
Each individual coral is referred to as a polyp. Coral polyps live on the calcium carbonate exoskeletons of their ancestors, adding their own exoskeleton to the existing coral structure. As the centuries pass, the coral reef gradually grows, one tiny exoskeleton at a time, until they become massive features of the marine environment.
Corals are found all over the world's oceans, from the Aleutian Islands off the coast of Alaska to the warm tropical waters of the Caribbean Sea. The biggest coral reefs are found in the clear, shallow waters of the tropics and subtropics. The largest of these coral reef systems, the Great Barrier Reef in Australia, is more than 1,500 miles long (2,400 kilometers).
Scientists have explored only about 20 percent of the ocean's floor, according to the National Oceanic and Atmospheric Administration (NOAA). As such, ocean explorers continue to discover previously unknown coral reefs that have likely existed for hundreds of years.
The lives of coral
There are hundreds of different species of coral, according to CORAL. Coral have a dazzling array of shapes and colors, from round, folded brain corals (named for their resemblance to a human brain) to tall, elegant sea whips and sea fans that look like intricate, vibrantly colored trees or plants.
Corals belong to the phylum cnidaria (pronounced ni-DAR-ee-uh), a group that includes jellyfish, anemones, Portuguese man o' war and several other gelatinous and stinging marine invertebrates.
Corals feed by one of two ways. Some species catch small marine life, like fish and plankton, by using the stinging tentacles on the outer edges of their bodies. Most corals, however, depend on algae called zooxanthellae to provide energy via photosynthesis.
The corals have a symbiotic, or mutually beneficial, relationship with the zooxanthellae, according to the U.S. Environmental Protection Agency (EPA). These algae live inside the coral polyp's body where they photosynthesize to produce energy for themselves and the polyps. The polyps, in turn, provide a home and carbon dioxide for the algae. Additionally, the zooxanthellae provide the coral with their lively colors — most coral polyp bodies are clear and colorless without zooxanthellae.
Some coral species, such as brain coral, are hermaphrodites, which means they produce eggs and sperm at the same time. Sexual reproduction occurs during a mass coral spawning event that, for some species, happens only once a year.
Other species, such as elkhorn coral, are gonochoric, which means they create colonies composed of either all males or all females. Within each coral colony all the polyps will produce only eggs or only sperm. For successful reproduction, the colony must rely on a neighboring colony that produces the other reproductive cell.
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Expert Diver Explore The Bottom Of The Sea
The underwater world amazes us as photographers. Part of being a good underwater photographer is being able to identify the fish and other creatures you're looking at. Knowing where to likely find their habitat, how creatures interact with each other and whether their behavior is unusual or not could be the difference between a good shot and a great shot. Sea creatures have some amazing adaptions for survival. Here are 10 Underwater Creatures Facts We Bet You Didn't Know...
When you descend below the surface, you are welcomed into an underwater world filled with colour, life and beauty. As divers, it is our duty to treat this world with the utmost respect and consideration as we are, in effect, ambassadors for ocean conservation. There are over 1 million known species of plants and animals in our oceans and it’s believed that there may be as many as 9 million species still to be discovered. The life of a scuba diver is certainly one of exploration and discovery.
I have been lucky enough to dive in some amazing places during my diving career so far, from quarries in Wales, to diving with Manta Rays in Indonesia. Everywhere has something unique to offer which attracts divers.
I will never forget my first open water dive in a beautiful haven in West Wales and seeing some large crabs scuttling their way along the ocean floor, I had never seen these kinds of animals in their natural habitat before. For me, I am in awe of what lies beneath the surface and how marine life comes in all kinds of shapes, sizes, and colors, and lives in all kinds of different environments, adapting to them perfectly. You can dive a site hundreds of times and still see something new and, sometimes, unexpected.
It is a dream come true to now be working in the scuba diving industry and I enjoy teaching others about the ocean and how important it is to protect it. Seeing people experience the underwater world for the first time is an incredibly rewarding experience and they are often surprised at the variety and diversity of the marine life that they see. I am consistently cutting tangled fishing lines, picking up any bits of debris that may be around and ensuring that I am playing my small part in a very large group of ocean ambassadors, looking out for and protecting this amazing place every day.
Every diver will have something that they feel the most passionate about whilst diving, whether it’s shipwrecks, underwater topography, marine life or all of these combined. Whatever the reason for diving, it is a privilege to be able to explore 71% more of the world than those who do not venture into the blue.
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Welcoming Party ' Waving Hands ' Under The Sea
Welcoming Party ' Waving Hands ' Under The Sea , If you don’t have the faintest idea what photography lingo means, don’t worry. The compact cameras all have “Auto Modes” that can work well for most situations. However, I’d suggest at least taking a few minutes to learn the basics about how shutter speed relates to ISO, and how exposure compensation and aperture work.
Typically, a slow shutter speed is your greatest enemy when it comes to taking a clear fish photo, so I usually decrease my exposure setting so that while I take a darker photograph, the fish is captured with minimal blur. Another asset is the ability of many cameras to shoot in “burst mode,” taking a rapid succession of photos if you hold down the shutter button. Especially for anyone aiming to capture high quality photos, burst mode drastically increases your chances of getting a photo with fins positioned optimally, as well as decreases your chances of having your shot ruined by a bit of sediment blurring across the face of the fish (a particular pet-peeve of mine).
Unless you desperately need to illuminate a fish to try to get an identification photo of something say, under a rock, you will want to avoid using the flash. Expensive external flash setups can properly illuminate fish, but the on board flash on most cameras will only serve to highlight every single possible bit of particulate matter in the water.
Making Great Movies ' Fishes Video graphing ' Under The Sea
Making Great Movies ' Fishes Video graphing ' Under The Sea , The question of where to photograph fish is moot if it is part of an existing planned survey, but for anyone specifically aiming to take good photos of a certain species of fish, water conditions are of the utmost importance. Shooting in already familiar watersheds can be best as it can be easier to predict water conditions, but looking at stream gauges and comparing flows to historic data can be useful.
Typically periods of low water are best for photographing fish since turbidity is at a minimum and often fish are more concentrated. Low flows also make it easier to hold steady in areas of current that might otherwise be prohibitive.
While it may not be the case elsewhere, here in the southeastern US, rain typically ruins water clarity for several days afterwards, unless you can find a watershed that’s fully protected forest.
When the water looks like chocolate milk elsewhere, mountain streams in the National Forests or parklands are often still running clear. Also important is finding an area that has plenty of overhead light so your camera isn’t struggling to capture the image. Direct sunlight is typically best, though overcast days may also work for photography so long as tree cover doesn’t block too much light. And of course, to photograph your fish, you must first know it well enough to find it.
It seems like this should go without saying, but it can sometimes be difficult to balance the requirements necessary to find both a good body of water to photograph in that also has appropriate habitat for the fish in question.
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Exploring Dolphins In Aquarium Museum
Exploring Dolphins In Aquarium Museum , Chesapeake was the first dolphin born at the National Aquarium, and she is the mother of our youngest dolphin, Bayley. Maya is a half-sister to Chesapeake (via dam, or mother), as well as a half-sister to Spirit (via sire, or father). Jade is the mother of Foster. All seven dolphins were born in an aquarium or zoological park.
This colony structure represents a complex social group for the dolphins and provides them with essential relationships. Bottlenose dolphins live in a matriarchal society, due to the level of care that females provide to their young; the males live in separate social groups consisting of a few members that are called bachelor groups or alliances. Here at the National Aquarium, we house our animals in what we call a nursery group, which consists of our females and our pair-bonded males.
Nani was the mother of Beau and Spirit. She passed away on Monday, February 27, 2017, after living at the Aquarium since 1990. At 44, she was the oldest dolphin in the colony. Born in the wild in 1972, she came to us from another aquarium that had to close.
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Experienced Divers Taking Photos For Old Snake Under The Sea
Experienced Divers Taking Photos For Old Snake Under The Sea , First we should consider some reasons that a biologist might want to point a camera at a fish that’s still swimming free in the water. It’s pretty easy to understand the utility of something like, say, recording a video of behaviors of a nesting bass, but the possibilities extend far beyond that. While discussing uses in the world of research, the ability to capture photos or video while in the field doing snorkel surveys can be invaluable.
As an example of the value of having a camera handy, while working on a snorkel survey for rare darters in Virginia, I happened to take note of a Nocomis chub that somehow looked out of place. The fish happened to be residing in a deep pool under heavy canopy cover that made it so dark that still photography was impossible and I couldn’t see well enough to make a proper ID.
Instead, I was able to record a 10 second video clip which I then played back frame by frame until I got enough of a view to determine the identity of the fish. As it turns out, I’d made the first observation of an introduced population of Bluehead Chubs (Nocomis leptocephalus) in the upper Tennessee drainage in Virginia, and it quite possibly would’ve been missed altogether without a short video clip.
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Brave Diver Sitting Quitly Between Group Of Rare Fishes Under The Sea
Brave Diver Sitting Quitly Between Group Of Rare Fishes Under The Sea , To capture underwater moments, you’d need the right tools for the job. The equipment used varies with budget, purpose, and skill level, and can range from a high-tech DSLR setup with expensive housings and external strobe lights, down to self-contained rugged compact cameras that are capable and affordable, or even your smartphone (with waterproof case of course).
For most fledgling underwater photographers, one of these compact cameras will be plenty capable for your needs. Over the last several years the capability of these cameras has become quite impressive, and many major manufacturers such as Pentax, Nikon, and Olympus have great options available.
I cannot stress enough the importance of studying the manual for your camera. Learn the features and settings. Photograph on land to practice and learn the quirks and limitations of your machine. You will not regret any time spent photographing a bee on a flower or some similar small, fast target.
Underwater, in all but the most pristine springheads you might encounter, turbidity will limit your useful “range” to no more than a few feet, and with smaller targets, you will be entering the realm of macro photography, sometimes coming within a foot of your subject. Besides the satisfaction of photographing insect life or other small wildlife (after all, most of us got into this field due to a love of nature) this is invaluable practice for taking pictures of similar targets in an environment where the elements can fight against you at every turn.
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Divers Explore Lost Ship Under The Sea
Divers Explore Lost Ship Under The Sea , For most fledgling underwater photographers, one of these compact cameras will be plenty capable for your needs. Over the last several years the capability of these cameras has become quite impressive, and many major manufacturers such as Pentax, Nikon, and Olympus have great options available.
I cannot stress enough the importance of studying the manual for your camera. Learn the features and settings. Photograph on land to practice and learn the quirks and limitations of your machine. You will not regret any time spent photographing a bee on a flower or some similar small, fast target.
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Experienced Diver Feeding Big Fishes At The Bottom Of The Sea
Experienced Diver Feeding Big Fishes At The Bottom Of The Sea , irst we should consider some reasons that a biologist might want to point a camera at a fish that’s still swimming free in the water. It’s pretty easy to understand the utility of something like, say, recording a video of behaviors of a nesting bass, but the possibilities extend far beyond that. While discussing uses in the world of research, the ability to capture photos or video while in the field doing snorkel surveys can be invaluable.
As an example of the value of having a camera handy, while working on a snorkel survey for rare darters in Virginia, I happened to take note of a Nocomis chub that somehow looked out of place. The fish happened to be residing in a deep pool under heavy canopy cover that made it so dark that still photography was impossible and I couldn’t see well enough to make a proper ID.
Instead, I was able to record a 10 second video clip which I then played back frame by frame until I got enough of a view to determine the identity of the fish. As it turns out, I’d made the first observation of an introduced population of Bluehead Chubs (Nocomis leptocephalus) in the upper Tennessee drainage in Virginia, and it quite possibly would’ve been missed altogether without a short video clip.
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Diver Makes Circle Bubbles Under Water
Diver Makes Circle Bubbles Under Water , capture underwater moments, you’d need the right tools for the job. The equipment used varies with budget, purpose, and skill level, and can range from a high-tech DSLR setup with expensive housings and external strobe lights, down to self-contained rugged compact cameras that are capable and affordable, or even your smartphone (with waterproof case of course).
For most fledgling underwater photographers, one of these compact cameras will be plenty capable for your needs. Over the last several years the capability of these cameras has become quite impressive, and many major manufacturers such as Pentax, Nikon, and Olympus have great options available.
I cannot stress enough the importance of studying the manual for your camera. Learn the features and settings. Photograph on land to practice and learn the quirks and limitations of your machine. You will not regret any time spent photographing a bee on a flower or some similar small, fast target.
Underwater, in all but the most pristine springheads you might encounter, turbidity will limit your useful “range” to no more than a few feet, and with smaller targets, you will be entering the realm of macro photography, sometimes coming within a foot of your subject. Besides the satisfaction of photographing insect life or other small wildlife (after all, most of us got into this field due to a love of nature) this is invaluable practice for taking pictures of similar targets in an environment where the elements can fight against you at every turn.
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Experienced Divers Photographing Big Fishes Under Water
Experienced Divers Photographing Big Fishes Under Water , A waterproof camera and snorkel gear should be part of everyone’s toolbox, especially fisheries professionals that rely on an array of techniques to collect data and communicate with the public.
n the wake of rapidly advancing technology, our ability to capture the moment with a camera has become increasingly universal and sophisticated. In the last several years, manufacturers have begun making affordable cameras that are built to stand up to various abuses such as exposure to moisture, extreme temperatures, and impact.
While the art and science of underwater photography is by no means a new development, the ability to capture stunning images of life underwater has now become part of the mainstream when it was formerly but a rivulet.
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Adorable Rare Fesh Koi Fishes In Salted Sea
How adorable this moment to capture some nice records for sea fishes , this time i recorded some koi fishes in Brunswick East , Victoria , this wonderful moment when you see this whole group makes you great .
In the past, koi were commonly believed to have been bred from the common carp (Cyprinus carpio). Extensive hybridization between different populations, coupled with widespread translocations, have muddled the historical zoogeography of the common carp and its relatives. Traditionally, Amur carp (C. rubrofuscus) were considered a subspecies of the common carp, often under the scientific name C. carpio haematopterus. However, they differ in meristics from the common carp of Europe and Western Asia, leading recent authorities to recognize them as a separate species, C. rubrofuscus .
Although one study of mitochondrial DNA (mtDNA) in koi was unable to find a clear genetic structure matching the geographic populations (possibly because of translocation of carp from separate regions), others based on mtDNA, microsatellite DNA and genomic DNA found a clear separation between the European/West Asian population and the East Asian population, with koi belonging in the latter.
Consequently, recent authorities have suggested that the ancestral species of the koi is C. rubrofuscus (syn. C. c. haematopterus) or at least an East Asian carp species instead of C. carpio.
Regardless, a taxonomic review of Cyprinus carp from eastern and southeastern Asia may be necessary, as the genetic variations do not fully match the currently recognized species pattern, with one study of mtDNA suggesting that koi are close to the Southeast Asian carp, but not necessarily the Chinese.
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