Thin-stripe Hermit Crab
The thin-stripe hermit crab ranges in color from green, to mixed green and brown, to dark brown and are marked with thin stripes, especially on the legs. Stripes are usually gray or white. Its claw legs and claws are equal size and length. When the thin-stripe's claws open, the inside is covered with teeth; the outer claw is covered with blue bony protrusions that are small and round.
Long-Armed Hermit Crab
The long-armed hermit crab is one of the most abundant species found along the Atlantic coast. The long-armed hermit crab is small and can range in color greatly from white to brown. The claws are unequal in size, and the right is the bigger of the two. The main identifying feature of this crab is the shape of its over-sized claw. The dominant claw is long, skinny and cylindrical.
Flat-Clawed Hermit Crab
The flat-clawed hermit crab is often found living in snail shells. Their bodies are often lightly colored and are either variations of white or light beige or gray. The claw arms are equal in length, but are rather wide and flat compared to other hermit crabs. The right claw is dominant and often covered with bony protrusions that are white and round. Flat-claws' eyes rest atop brown cylinders and lie behind tall brown antennae.
Giant Hermit Crab
Giant hermit crabs can grow to be several feet long and they are bright red in color. Their eyes rest atop long, cylindrical shafts that protrude from the top of their heads. There are several red, black and yellow "hairs" resembling antennae in front of the eyes. The claws are two different sizes and two different shapes; the right claw is always the bigger of the two.