Eelgrass Isopod

Pentidotea resecata

Eelgrass Isopods are small crustaceans belonging to the family Idoteidae. They are typically found along the Pacific coast of North America, ranging from Alaska and British Columbia down to Baja California Sur. These isopods inhabit shallow intertidal zones, often residing in seagrass beds, where they can blend in with their surroundings. Their coloration and shape allow them to camouflage effectively among the eelgrass, providing protection from predators. The Eelgrass Isopod is a benthic species, living at depths ranging from the surface to about 18 meters. Divers may encounter them in seagrass beds, where they are often seen clinging to the blades of eelgrass. They are part of the diverse marine life that thrives in these habitats, contributing to the ecosystem by grazing on algae and organic matter. Reproduction in Eelgrass Isopods involves indirect sperm transfer, and the eggs are brooded in a specialized pouch called the marsupium. After hatching, the young emerge as manca postlarvae before maturing into adults. While the conservation status of this species has not been evaluated by the IUCN, they are commonly recorded at numerous dive sites.