no
of course it is! look up sea urchin in the da dictionary!!!
A salt-water body. Like a SEA or ocean. It says in the name SEA urchin.
the purple sea urchin
The Purple Sea Urchin's diet consists of plants, animal matter, including algae, dead fish, sponges, decaying matter, mussels, barnacles, and kelp. The Purple Sea Urchin is the prey of crabs, sunflowers stars, snails, most birds, fish, sea otters, and humans. The Purple Sea Urchin is actually a delicacy in some countries.
They do, which keeps the sea urchin strong and not brittle.
No, not even remotely.
150 pounds and counting
the colors a sea urchin could be is black olive brown purple blue and red
the migrate to the very bottom of the ocean way back in the deep feet
The classification of a Sea Urchin is Echinoidea
sea urchin