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Anonymous users2024-02-12Crabs, like fish, breathe with gills in the water. However, its gills are more special, growing on the sides of the back of the body, and have many gill pieces that resemble sponges, which can absorb a lot of water. In this way, when it leaves the water, it still reliably breathes the water in its gills for a considerable period of time.
When water and air in the gills are spit out of the gills together, countless bubbles are formed. So, the crab blowing bubbles is breathing.
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Anonymous users2024-02-11Hello, glad to answer for you.
The crab spits bubbles, which is caused by its unique way of breathing. Crabs are gill breathers like fish. The difference is that fish breathe by sucking water into the mouth and then passing the water through the gills.
Crab breathing, on the other hand, is to suck water out of the gills and then squirt water out of the outlets on both sides of the mouth.
If you stay on land for too long, the water in the gills of crabs will gradually decrease, and they will still try to twitch their gills and mouths as if they were breathing in water, constantly absorbing air from the outside world, and exhaling some of the water in their gills along with the air, so that a large number of bubbles are formed.
I hope my answer helps you.
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