I've cleaned a lot of crabs commercially and for private use: Alaskan King Crab, snow crab, and dungeness crab. Every single one of them had gills. Perhaps Australian crabs come to the surface to breathe thus the similarity to bees breathing apparatus as David Goble states. I find fascinating the logic that because crabs and bees share the classification of invertebrate that THEREFORE bees can stay under water but die only because they run out of FOOD. Perhaps Mr. Goble (presumably a vertebrate) can breathe underwater like a fish (another vertebrate) but most of the rest of us need to carry our air with us (scuba dive) when we stay underwater longer than one lungful of air can sustain us. Perhaps I'm just showing my humor impairment. Please, Mr. Goble, tell us this is a joke posting. Alden Leatherman [log in to unmask]