Red-spotted White Crab (Lissocarcinus orbicularis)
Also known as the “Sea Cucumber Crab”, the red-spotted white crab is a species of portunid crab that is widely distributed throughout the Indo-Pacific, including the Red Sea. True to one of its common names L. orbicularis holds commensalistic relationships with certain species of sea cucumbers (Typically Holothura whitmaei, H. atra, and Actinopyga obesa). L. orbicularis will inhabit the either the sea cucumbers’ oral tentacles, anus, or gut cavity and likely feeds passing scraps of food.
Image: Steve Childs