Why are crabs bubbling?
Crabs that spend part of their lives in the water, and part out, can blow bubbles. This foaming-at-the-mouth might look like the crab is in distress, and sometimes it is, but in healthy crabs, mouth bubbling comes from the crab breathing air instead of water
Why do crabs spit out their meat?
A means of evaporative coolinglike the mosquito’s behavior described here. An attempt to eject irritants from the crab’s mouthparts. Possibly a means of self-defense.
Why do blue crabs spit?
The feathering provides more surface area for the crab to absorb oxygen from the water. To breathe the blue crab takes water into its mouth, pushes it over its gills, and then spits the water back out its mouth in a continual motion
Why do crabs have weird mouths?
Crabs, as with other species like lobsters and crayfish, are known to have teeth in their stomachs. In the absence of teeth in their mouths, this feature, called a gastric mill, allows them to process food