Jellyfish

Jellyfish or jellies are marine invertebrates of of the phylum Cnidaria. They are typified as free-swimming marine animals consisting of a gelatinous umbrella-shaped bell and trailing tentacles. Jellyfish are not fish and they are related to corals and anemones. Jellyfish have roamed the seas for at least 500 million years, and possibly 700 million years … Read more