Some types of crabs I know of are fiddler crabs, hermit crabs and horseshoe crabs.
types of crabs .
An Exoskeleton - external skeleton. Stops it getting omnomed
what the names of different types of crabs?
Crabs have a shell (actually a carapace) that is solid and rigid and it doesn't grow with the crab so every so often then split it open and crawl out of it to grow a slightly bigger one. What you are...
Lebanese Tortoise