Sea urchins have poisonous spikes so sea life find it very hard to eat them. But otters use rocks to crack them open and eat them also humans will gut the sea urchin and eat there insides
You can find out by asking other people like your teacher, parents, friends, and brothers or sisters if you don't think this answer is right. the answer is otters, people, and heron.
eats decomposing plants and animals making it also somewhat of an omnivore
The classification of a Sea Urchin is Echinoidea
eats decomposing plants and animals making it also somewhat of an omnivore
eats decomposing plants and animals making it also somewhat of an omnivore
sea urchin
A sea urchin does move, but not very frequently.
A starfish is a omivore so it eats fish ,oysters, sea urchin, aglae, clams and coral
because the crab needs the sea urchin for protection and the sea urchin needs the crab for food
algae
algae
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. :(