User blog comment:Lightning2315/Once again...Since Im bored./@comment-1194826-20110109204222/@comment-1349273-20110109210742

Aye, crabs and lobsters can keep their gills wet when outside of the water due to two factors. First, their shell is fairly tight and keeps moisture inside. Secondly, they can secrete their own moisture from their body, to which their shell keeps inside.