animalia
Sea urchins belong to the kingdom Animalia, which is one of the five kingdoms of living organisms. Within the kingdom Animalia, sea urchins are classified under the phylum Echinodermata. Echinoderms are characterized by their spiny skin and radial symmetry, which sea urchins exhibit prominently.
Taxonomically, pigs belong to Kingdom Animalia, same as sea urchins and humans.
Echinoderms.
Echinoderms.
Kingdom Animalia.
No, sea urchins are not fish. They are marine animals belonging to the phylum Echinodermata, whereas fish belong to the animal kingdom Chordata. Sea urchins have a hard outer shell made of calcium carbonate and are more closely related to starfish and sand dollars than to fish.
Sea stars also known as starfish, are in the class Asteroidea. They belong to the phylum Echinodermata. Also in this phylum are sea urchins, sand dollars and sea cucumbers.
Sea grass belongs to the Plantae kingdom.
Includes: Sea Stars, Sea Lillies, Sea Urchins, Sea Cucumbers, Brittle Stars
The sea star is often percieved as a starfish, but is is not a fish at all. It is part of a group called echinoderms. This group also includes sea cucumbers and sea urchins. They all have tube feet, they're invertabraes, they have a skeleton under their skin and they have no head.
Sea urchin belongs to the Animalia kingdom, Echinodermata phylum, Echinoidea class, Echinoida order, Strongylocentrotidae family, Strongylocentrotus genus, and purpuratus species.
Animalia