Description:
Caudina obesacauda reaches an adult size of approximately 6 inches and is easily identified by its unusual shape, color, and lack of tube feet. Body color is typically a uniform light gray or white.  The anterior 2/3 of the body is generally cylindrical, but tapers along the posterior 1/3 toward the tail.  The mouth is surrounded by 15 small, finger-like tentacles.  The skin near the mouth and along the tail is contracted into pleated folds.  The body wall is thin and smooth, yet somewhat gritty to the touch. 

Habitat:
This species inhabits the shallow subtidal zone to depths of approximately 35 feet.  It is commonly found in soft, sandy sediments.

Range:  
Caudina obesacauda ranges within Florida from Jupiter Inlet south to the Florida Keys and Dry Tortugas,  through the Gulf of Mexico and south to Brazil.