Physical 

Long-Clawed Hermit Crabs are small, with a maximum shell length of 2.5 cm. They are tan or light gray with a dark brown to gray stripe on their major claw and legs. Their abdomens are not armored, and they must seek shelter in the shells of other organisms.

Habitat

P. longicarpus can be found in waters less than 150 ft. They prefer firm sediment, and are commonly found near Mud Dog Whelks, whose shells they will use.

Feeding 

Hermit crabs are opportunistic feeders, and eat any organic matter that they find. It is not unusual for individuals to cooperate to overcome or consume larger prey.