Laurent's Hermit Crab

Calcinus laurentae

Laurent's Hermit Crab, known scientifically as Calcinus laurentae, is a small crustacean species native to Hawaii and the Central Pacific, including areas near Australia. Divers can identify this hermit crab by its distinctive orange eyestalks with white rings, and its black eyes speckled with tiny white dots. Its large claw pinchers are brownish-black, fading into white at the tips, while the walking legs are reddish-orange with pink tips and feature white rings near the joints. This species is tiny, measuring around 0.75 cm in size. Laurent's Hermit Crab inhabits marine environments below the intertidal zone, typically at depths of 6 meters or deeper. They are commonly found in coral reefs, small caves, under rocks, and on branching corals. These crabs are nocturnal scavengers, feeding primarily on decaying organic matter. Like other hermit crabs, they rely on discarded snail shells for protection, and it is not unusual to find multiple individuals sharing a single shell. Reproduction involves indirect sperm transfer, with courtship rituals that include touch and smell. Divers may encounter these crabs at popular dive sites in Oahu, such as the Haleiwa Trench and Sea Tiger. As of now, Laurent's Hermit Crab has not been evaluated for conservation status, but they are considered common in their natural habitat.