WildCreatures

Shark feeds are controversial in the minds of many people, however, the role they play in shark conservation and education is undeniable. The positive aspects are often underestimated. Once sought for food and sold in illegal fin trafficking, sharks were harvested in greater numbers. People in many countries simply cannot resist the income that is provided and their survival makes the ethical dilemma impossible to consider. Eco tourism provides an alternative to harvesting the sharks. While it can be argued that the sharks should not be taught to associate humans with food, these shark dives do provide an incentive to conserve sharks. They are worth more alive than dead. It's a debate with many perspectives. These divers witnessed what happens when a few scraps are held in a bucket and later released. It's a small and controlled feeding that provides an injection of dollars into a struggling economy. It is also an experience that leaves many divers with a new appreciation for the beauty of sharks. We see here that the sharks pose no threat to the divers, dispelling the myth that they are cold blooded killers, ready to eat anything or anyone they encounter. Sharks play a crucial role in the health of the reef, the ocean, and the planet. If we lose sharks, we will not survive. Understanding and appreciation is the first step in developing the needed respect for sharks. The balance of nature is fragile and we have a great responsibility to avoid upsetting it.

Kugel fountains are often called floating sphere fountains but the sphere is not actually floating. It is held in place by pressurized water that forms a thin film on which the sphere aquaplanes. These are water features or sculptures where the sphere sits in a fitted hollow in a pedestal. Pressurized water flows between the sphere and socket, creating a mechanical hydrostatic bearing that is nearly frictionless. These spheres can weigh thousands of kilograms, but the efficient bearing allows them to be spun by the force of a hand. The sphere does not float, being denser than water. They are often made from granite. The hydraulics of the fountain can be controlled so that the axis of rotation of the sphere changes continually. This kugel fountain sits outside the Guinness Book of World Records Museum in Niagara Falls, Canada. The sphere is massive, weighing more than 4,500kg (10,000lbs) and measuring almost 2m (6 feet) in diameter but a person can apply a small amount of pressure to stop the ball from rotating. The direction of the sphere can be changed easily. It is a true feat of engineering to manufacture such a precise structure that the water can hold it off the pedestal. These guests to Niagara Falls found this structure very fascinating as they figured out the principle behind it. They posed for pictures with it as they began to understand what they were seeing. Kugel fountains can be found all over the world. Many are at popular tourist destinations, such as science museums, shopping centers, lobbies, and gardens. With a little imagination, there is no end to what the human mind can invent.