Atlantic blue claw crab
Yes, a crab can live with one claw.
The land hermit crab has a big claw and a small claw. The ocean hermit crab's claw's are the same size.
In parts of the Caribbean we call it the Gundi. Not sure of the spelling. Could be Gundee. Can't find it in a dictionary, anyway. If someone has the correct spelling, do share. It is also referred to as the armor claw, with the smaller called the feeder claw. On forums you will see it referred to as the BP (big pincher) and LP (little pincher).
summer
The claw.
I have a red claw crab that regenerated it's claw. It took like 6 weeks. The new claw is not as big as the old one.
The claw size has nothing to do with the sex of the hermit crab. The small claw is a "feeder" claw, used to rip and tear food and bring it to the crab's mouth. The large claw is used for defense, as well as for holding the food while the crab uses the small claw to pick pieces off to eat. The female crab will have two visible gonopores on the 4th pair of walking legs, and will have pleopods on the side of her abdomen, best seen when the crab is switching shells.
Caribbean hermit crab was created in 1787.
they run and have a claw
The Blue Crab has ten legs. They use the fifith set of legs to swim and the third set to walk. For further information go to: http://www.avivadirectory.com/trivia/213-20-fast-facts-about-blue-crabs
You can tell a fiddler crab's gender by its claws. A female fiddler crab has two claws, the same size. A male fiddler crab has one large claw and one small claw.