in the water
A sea urchin does move, but not very frequently.
by mating with another GIANT red sea urchin!
10 / 100
Sea urchins move by using tube feet on it's underside that work with the spines to help it move
The classification of a Sea Urchin is Echinoidea
sea urchin
the colors a sea urchin could be is black olive brown purple blue and red
Dominique Bureau has written: 'Red sea urchin'
because the crab needs the sea urchin for protection and the sea urchin needs the crab for food
Ummm...it's the thing from which a sea urchin hatches?
I think a sea anenome and a sea urchin can live together because i have a little aquarium and there is a sea urchin and and a sea anenome (if that's how you spell it) living in there and they were perfectly fine. BUT if you have a sea urchin do not have any crabs in there, because my sea urchin killed one, and almost killed another one by taking its claw off. :(
they are as an urchin has the ability to catch small fish or shellfish such as cockles and whelks it is well and truly able to eat plants and meat