Nothing, he's probably molting, so don't disturb him!
yes
Hermit crabs dip their big claw in and drink drop of water on it.
Hermit crabs, if grown up in a large aquarium can get as big as an orange.
it depends how big the hermit crab is or the fish bowl
* first they are big and small * up to 6 in.
The land hermit crab has a big claw and a small claw. The ocean hermit crab's claw's are the same size.
Yes, Hermit crabs can only maneuver when they can lift and fit the shell appropriately.
They are small as a pea.
When a hermit crab outgrows its shell, it will move into a larger shell.
it deppends on how big the hermit crabs and the moon crabs are but if the hermit crab is bigger youv'e got your self a dead moon crab
birds,big fish
It depends on the hermit crab but I would personally say just to be careful No the big one might hurt or bully the smaller crab.