Depending on the species, sea urchins range in size from a few inches across (small rock-boring urchins) to a foot or more across (pencil urchins and venomous hollow-spined urchins). THATS NOT HELPFUL!!
dogfish, sea urchins, walrus, Pizza(jk) and seaotters
Any bottom feeders like sea urchins, sea stars, and mussles
A Trigger fish eats spiny sea urchins, crustaceans, and mollusks.
sea urchins , shellfish and some other stuff but other than that idk!
NOTHING APART FROM LUKES
A Trigger fish eats spiny sea urchins, crustaceans, and mollusks.
Clams, sea urchins, fish, seals, sea lions, it depends on the area
The different crabs that eat sea urchins include (but are not limited to): king crab, decorator crab, hermit crab and many more.
Animals that eat sea grass are Manatees, Sea Turtles, Conch es and Urchins.
No. Sea urchins live in the sea.
octopuses will eat crabs, fish, sea urchins and many other things.