Shortfinger Neck Crab

Coryrhynchus sidneyi

The shortfinger neck crab, belonging to the family Inachidae, is a crustacean found in the Western Atlantic Ocean. It is typically associated with benthic environments, where it can be found at depths ranging from 0 to 187 meters. This species is often observed on molluscan and other shells. Divers may encounter these crabs in various habitats, but they are most commonly found in shallower waters, with 61% of occurrences recorded at depths less than 40 meters and 90% at depths shallower than 90 meters. The shortfinger neck crab is part of the order Decapoda, which are mostly gonochoric, meaning individuals are either male or female. Mating involves a precopulatory courtship ritual that relies on olfactory and tactile cues, with sperm transfer usually being indirect. Divers should look for these crabs on the ocean floor, particularly around shell debris, where they may be camouflaged. An encounter with this species offers a glimpse into the diverse and intricate world of benthic marine life.