Batwing Coral Crab

Carpilius corallinus

The Batwing Coral Crab, Carpilius corallinus, is the largest crab species found in the tropical waters of the western Atlantic Ocean, ranging from Florida to Brazil, including the Gulf of Mexico and the Caribbean Sea. This crab is identifiable by its robust and broad carapace, which can reach up to 15 cm in width. Typically inhabiting shallow waters, it is often found among rocks, coral reefs, and rubble, at depths ranging from 1 to 50 meters, with most sightings occurring between 1 and 20 meters. The Batwing Coral Crab is nocturnal, emerging at night to feed primarily on mollusks and crustaceans. Its feeding habits make it an important part of the benthic ecosystem, contributing to the control of mollusk and crustacean populations. The crab's mating behavior is unique; the male initiates mating by displaying an upside-down position and waving its chelae to attract a female. After a two-day coupling process, the male dies. For divers, encountering a Batwing Coral Crab can be an intriguing experience, particularly during night dives when the crab is most active. While it is edible and of commercial interest, its conservation status has not been evaluated, leaving its population trends unclear.