Comb jellyfish
This animal is often mistaken for a jellyfish, but it actually has its own Phylum, Ctenophora and is only remotely related to the Cnidaria. Although comb jellyfish do have tentacles they are unable to sting. The tentacles are "sticky" and are used to catch their prey, such as large crustaceans and even small fish.

Eight rows of cilia are used for locomotion and most species are dictated by currents where to go. However, some species do attach themselves to substrate or benthic organisms such as sponges, seacucumber or anemones.