Jellyfish no brainer
jellyfish Have no Brains, I didn't know that
#facts #jellyfish #interesting
Jellyfish, also known as sea jellies, are free-swimming marine animals with umbrella-shaped bells and trailing tentacles. They belong to the phylum Cnidaria, which also includes corals and sea anemones. Jellyfish come in a variety of shapes, sizes and colors, with some species growing up to six feet in diameter. They have a simple nervous system and lack a brain, but have sensory cells that allow them to detect light and movement. They feed on small organisms like plankton and fish eggs, and use their tentacles to sting and immobilize their prey. Some jellyfish also have symbiotic relationships with algae, which provide them with energy through photosynthesis. They are found in oceans all over the world and have a long lifespan, with some species living up to 20 years. Despite their delicate appearance, jellyfish are tough survivors, and have been around for over 700 million years,
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