The jellyfish is an aquatic invertebrate that belongs to the phylum Cnidaria. There are different classes of jellyfish, including Cubozoa and Scyphozoa. A jellyfish is not a fish. Fish are vertebrate animals.
Jellyfish and Coral and sea anemones
the salmon has gills and the jellyfish does not
Jellyfish refers to the medusoid stadium of animals belonging to different classes and orders of the Phylum Cnidaria.
Jellyfish belong to the Medusozoa subphylum. The classes of jellyfish include cubozoa, hydrozoa, polypodiozoa, scyphozoa, and staurozoa. They are under the kingdom of Animalia and phylum of cnidaria.
There are numerous species of what we call "Jellyfish." There are five classes of jellyfish: Cubozoa, Hydrozoa, Polypodiozoa, Scyphozoa, and Staurozoa. There are 12 Orders within the various Classes, then numerous families and genera resulting in an estimated 1,700 - 2,000 species.
Different species Jellyfish can be found in all the oceans across the world.
Different catagories of jellyfish are Marine,Sea,Fresh water, Salt water, Deep sea,Ocean, and common.
The sea jelly
There are many different type of jellyfish, so there is no specific genus and species for all of them. For example, the Upside-Down jellyfish is called Cassiopea xamachana. The moon jellyfish is Aurelia aurita.
Octopuses are not transparent, and are usually larger, and shaped totally different from jellyfish. They have eight arms, while jellyfish have tentacles, string-like in shape.
Jellyfish are bell shaped and roundworms aren't. Jellyfish sting and roundworms do not. jellyfish are radial and and roundworms are not.