Juvenile Gastropod or Bivalve?

Hi all,

I would appreciate your assistance in identifying what I believe to be some type of juvenile gastropod or bivalve. This was found in Roatan, Honduras underneath a piece of wood at 15 feet. Length is approximately 6mm.

Thanks in advance for your help!

Doug
 

I have no idea what it is, but that is a nice find.

Thanks Swift! I am going to try my luck on Nudibranch Central.

A bivalve in the family Galeommatidae. In some species like this one the mantle completely covers the two valves and the animal crawls or hops on its foot.  Many of the species are commensals on other inverts