Dall's Dwarf Turban

Gigahomalopoma luridum

Gigahomalopoma luridum is a small sea snail with a solid, globose shell that typically measures between 6 mm and 10 mm in height. The shell can be colored red, ashen, or purple, featuring a conic spire and five slightly convex whorls. The last whorl is notably deflected toward the aperture, which is pearly white on the inside. The shell's surface is marked by about fifteen spiral lirae, which are separated by interstices of similar width, giving it a somewhat irregular appearance. This species is found abundantly in the Pacific Ocean, particularly under rocks and shale in intertidal zones from Sitka, Alaska, to Northern Baja California, Mexico. It is typically encountered at depths shallower than 40 meters, with most records occurring at around 30 meters or less. Dall's Dwarf Turban primarily inhabits rocky environments, often in tide pools where it can be found hidden under rocks. This species is herbivorous, grazing on algae and organic matter in its habitat. Breeding habits are not extensively documented, but like many gastropods, it may engage in reproductive behaviors typical of marine snails. Divers may encounter this species while exploring rocky reefs or tide pools, where its small size and cryptic coloration allow it to blend into its surroundings, making it somewhat challenging to spot.