Echinus tylodes
is a species of sea urchin in the family Echinidae. It is white with rather sparse pink spines and is endemic to the eastern coast of North America including the Gulf of Mexico. E. tylodes has a sub-globular test that is about two thirds as high as it is wide and grows to a diameter of 10 cm (4 in).
It is often found around deep-water corals, sitting on the coral branches or around coral mounds among the remains of dead corals. Examination of the gut contents of this species showed small shells and the skeletons of hydroids…
(read more: Wikipedia) (photo: Dr. Steve Ross, NOAA/UNC)