[Aliska]

I keep getting outages so bear with me. I thought after I posted, that their bodies may be different, no lungs or air cavities, guess I don't know enough about them or how the bends works. I thought it was pressure in the body that when too quickly reduced causes great pain and possibly exploding or rupturing like you said.

It seems logical that even though they usually stay at the bottom of the sea (real bottom feeders there), they must rise to the surface or to a depth where they could get trapped in a fisherman's net. I doubt fish feed on them and don't know if there are any natural predators. Kind of creepy things but look somewhat like crabs.

[piytar]

Bends is cause by dissolved nitrogen literally boiling out of your blood when you move from high to low pressure too fast. Water breathers such as these don’t have dissolved nitrogen in their blood, so they don’t get the bends.