Jellyfish fact

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you know jellyfish? there is much fact about jellyfish, check this out. 1.jellyfish first found about 650 million years ago, and found on every sea. jellyfish also found on freshwater. 2.Medusa (Plural Medusae) is the other name for jellyfish. Medusa is popular in Greece , finland, portugues, romania, serbia, kroatia, spain, france, italy, hungary, poland, cezk, slovakia, rusia, and bulgaria for jellyfish. 3.Jellyfish is not species of fish, there is wrong assumption about jellyfish , then American Public Aquariums call it "seajellies". 4.4.Jellyfish doesn't have respiratory system, because their skin is thin, and their body contained oxygen by diffusion. 5.Jellyfish doesn't have brain or centered nerve system, but jellyfish have loose nerve web, that on epidermis. 6.Jellyfish body contained 90% of water 7.Jellyfish have unique reproduction, male and female release their sperm and ovum to the water, and fertilized automaticly when meet. 8.Jellyfish have deadly poison 9.The biggest jellyfish species is "the lion's mane jellyfish". the diameter of the bell about 7 feet, 6 inch. the tentacles can reach 120 feet. is that true some people called it Medusa or seajelly ? I called it "UBUR-UBUR", according on my language.