Jellyfish is a common name for gelatinous water dwelling animals. The diversity of these invertebrates is amazing. And what actually counts as a jellyfish is not easy to determine. Watch this great video to learn about Cnidarians, Urochordata, Polychaetes and Ctenophores.
Related: Darwin’s Jellyfishes – Ocean Life – Critter Cam: Sea Lion versus Octopus – Image of Map Showing Concentration of Life in Oceans

my 4-year old loves jellyfish, so thanks for an interesting post (passed a few minutes of daddy-time!)
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