If you mean the parasite, they're about the size of a flea or lice. If not the parasite, the size has a large range.
in captivity, land hermits can get to the size of a Baseball, that is if you take very good care of it. In the wild they will get to about the size of a grapefruit.
How big do crabs get?
they grow about 5 inches long and 6 inches wide
The life cycle of a crab starts at an egg the they turn into the tinest of crabs then they grow into a big crab.
Adult male blue crabs are about fifteen centimeters wide. They are commonly known as "Jimmys." Some crabs are said to be able to grow as big as four meters.
No, I do not believe body crabs are transmitted by sand at the beach.
there are 5 crabs on the left side of the beach and 3 crabs on the right side of the beach
If you plan on making your crabs mate, you're out of luck because they only reproduce in the wild. They can become friends with each other in captivity. They can get as big as a baseball, but fear not, because not all crabs even grow that big.
crabs
No hermit crabs do not grow back skin
Crabs grow out of their shells and they also shed their skin to do that. Meaning they molt their skin.
crabs
crabs
Plankton