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They get oxygen from the water and air depending on what species of crab they are

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15y ago

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Will a crab die out of water?

Well, the water has oxygen in the water so yes, the blue creek crab can live under water forever IF it has too. It usually goes up for oxygen, but the oxygen in the water is a secondary source.


Do crab breathe through gills?

Yes, they breathe to extract oxygen from the water like a fish.


Why is crab's blood white?

they do not have red blood cells/corpuscles like other animals. there is one variety of crab which has blue blood called Horseshoe crab, which they use it for medicinal purpose. Woodlice along with most other crustaceans including the horseshoe crab have the compound haemocyanin in their blood. Haemocycanin carries oxygen in the same way that haemoglobin does in mammals. Haemocycanin contains a copper atom instead of the iron atom found in haemogobin. The blood is pale blue when it is carrying oxygen and colourless when it is not carrying oxygen. hope this will solve your problems. hannah


How does a crab breathe on land?

Crabs need oxygen, just like we do, but instead of using lungs inside the body they use gills outside the body to obtain it.The mouthparts are visible on the underside of a crab. The gills through which the animal obtains oxygen cannot be seen. They are soft structures under the side of the shell.Their shells help to trap water near their gills so that they can still breathe the oxygen .


What is the color of a horseshoe crab?

Actually, it is white. But, when it comes in contact with oxygen, it becomes blue, due to some bio - catalysts.


Why do horseshoe crabs have blue blood?

Horseshoe crab blood is blue because it has copper in it instead of iron like human blood. Our blood is blue inside and turns red when it hits air. Horseshoe crab blood is red inside and turns blue when it hits air. It's the other way around.


Are crab and mud skipper able to take in air from the atmosphere?

No, but they have gill chambers which they use to store water, to take in dissolved oxygen.


Does crab breathe in dissolved oxygen?

Yes, hence some species are able to live at great depths in the oceans


What are the predators of the Halloween crab?

a Halloween crab is a crab in a costume a Halloween crab is a crab in a costume


Can a hermit crab be a sea crab and a land crab?

yes.


Can you have a list of descriptive words to describe a crab?

~colossal crab ~Deceptive crab ~drunken crab ~etc.


What crab is bigger the Alaskan king crab or the coconut crab?

The Alaskan crab is much larger than the coconut crab. The coconut crab weighs up to 9 lbs. and the Alaskan crab weighs up to 18 pounds.