Coenobita compressus
Unlike true crabs, the abdomen is soft, curved, and unprotected. The body’s torsion is specifically adapted to ‘screw’ into the spiral of marine gastropod shells.
It has been observed that some hermit crabs not only inhabit shells as shelter but may also gradually modify their interior. Through constant abrasion and natural processes, the shell may become better suited to their growing needs.
The species possesses gills that must remain moist to enable oxygen exchange. Individuals store a small quantity of saltwater inside their shell, creating a portable aquatic microenvironment.
Diet is highly varied, encompassing algae, fallen fruit — including manchineel berries — fish remains, bird feces, and even the carcasses of other invertebrates.
