Description:
Burrowing sea cucumbers reach a maximum size of 10 inches.  The body is typically swollen in the middle and tapers toward both ends.  There is little difference between the dorsal and ventral surfaces, except that the tube feet, which are scattered over the entire body surface, are more concentrated on the ventral side.  The body wall is thin, smooth in the midregion, and stiffer at the ends of the animal.  The mouth is surrounded by 20 small tentacles.  Body color is light tan to brown or pale gray, usually contrasted with darker blotches of brown or black in 2 longitudinal rows on the dorsal surface.

Habitat:
Burrowing sea cucumbers are found in seagrass beds, where their burrows appear as conical mounds in the sand.  they are also found throughout all reef zones, from the fore reef to the back reef. 

Range:  
Burrowing sea cucumbers are circumtropical.  In the Western Atlantic, they are found from Bermuda south through Brazil.