Elkhorn Coral Crab

Domecia acanthophora

The Elkhorn Coral Crab, a member of the family Domeciidae, is typically found in the tropical waters of the Southwest Atlantic, particularly around Brazil. This species is benthic, residing primarily on the ocean floor, and has been recorded at depths ranging from the surface down to 146 meters. However, most sightings occur at shallower depths, with 90% of observations being at depths less than 80 meters, making it accessible to divers exploring coral reefs and similar habitats. These crabs are epibiotic, meaning they live on the surface of other organisms, often seen amidst coral structures. Mating generally involves indirect sperm transfer. Divers encountering the Elkhorn Coral Crab can expect to find them in coral-rich environments. Although not evaluated by the IUCN, their presence at numerous dive sites suggests they are not currently at risk. Observing these crabs can be a unique experience due to their association with coral habitats, adding to the diversity of marine life seen during a dive.