Depends where your looking...
yourself
Paddles
In general, river crabs eat dead fish, some plants, and some loose fish pellets that are left in the water.
it has a big shell
yes
Hermit crabs, if grown up in a large aquarium can get as big as an orange.
by rubbing their big claw on there body
* first they are big and small * up to 6 in.
great eastern 692ft (211m)
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
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.
the roaring bulls paddle wheel is 10 feet in dia. the roaring bull is a sternwheeler ferryboat on the Susquehanna in pa.