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of course it is! look up sea urchin in the da dictionary!!!


They look like a normal eye except the white in a sea urchin is blue and have bright yellow eye coloring.


a sea urchin is a producer



it kind of looks like a blob of jelly it takes at least 4 years for a sea urchin to get its form


They protect the sea urchin from predators, help in movement and burrowing, and they help them with camouflage.


The classification of a Sea Urchin is Echinoidea


A sea urchin is an echinoderm



There are over 700 species of Sea urchins. Some examples would be the pincushion sea urchin, the popular and common longspine urchin, the Blue Tuxedo urchin, the shortspine urchin and the pencil urchin. They usually differ in color, location most common and overall look or how long their spines are.


Echinoderms can look either like a starfish or a sea urchin.


There are many species of sea urchin but all sea urchins belong to the class Echinoidea.


how did the sea urchin became endengered


A sea urchin does move, but not very frequently.


A sea urchin is an invertebrate not a vertebrate


because the crab needs the sea urchin for protection and the sea urchin needs the crab for food


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. :(


a sea urchin is a invertebratebecause it does not have a backbone


a sea urchin is a spiky, prickly thing that lives in the sea like sea cucumbers.


An urchin is a marine invertebrate.


The sea urchin is an aquatic animal, very strange - Echinus melo.


Sterechinus neumayeri scientific name of sea urchin


It urges the sea to adapt to IT! The litle urchin urger.



Spines of the sea urchin can cause injuries of the skin.



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