28 Types of Jellyfish (With Pictures) – Identification Guide
Jellyfish , primarily from the phylum Cnidaria ( class Scyphozoa , Cubozoa , and Hydrozoa ) , are gelatinous , free - swimming shipboard soldier animals known for their chime - forge body and trailing tentacle armed with sting cells ( nematocysts ) . With over 2,000 species , they inhabit every sea , from coastal shallow to the deep ocean , play critical office in shipboard soldier ecosystem as predators and prey ....