What's the reason for crabs foaming

summary

Crabs are crustaceans that live in water. They breathe with their gills. However, the gills of a crab are different from those of a fish. They do not grow on both sides of the head, but are made up of many spongy gills, which grow on both sides of the body and are covered by hard crustaceans. Now I'll tell you why crabs froth.

What's the reason for crabs foaming

Reason 1: Although crabs often live in the water, they are different from fish. They often climb to the land to look for food, and they will not dry out after leaving the water. This is because the crab gills store a lot of water, leaving the water, still as in the water, also can keep breathing.

Reason 2: inhale a lot of air and spit it out from both sides of the mouthpiece. Because it absorbs too much air, gills and air contact painting volume is larger, gills contain water and air together spit out.

The third reason: still like breathing in the water, I try my best to stir my mouth and gills, constantly inhale the air, and then spit out a little water in my gills together with the air, forming many bubbles.

matters needing attention

Although crabs live in water, they often come ashore to look for food.?? After leaving the water, it will not dry out, because there is still a lot of water left in the gills, and you can keep breathing. However, if you stay on land for a long time, most of the moisture in your cheeks will be taken away by the air, and your cheeks will gradually dry.