How Do Crabs Breathe?

Answer

Crabs breath through their gills. They extract oxygen from the water like fish do. They keep their gills moist even when they are out of the water. This is why they prefer cool dark places.
Q&A Related to "How Do Crabs Breathe?"
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Air using gills as fish do, and they breathe on land by keeping their gills moist so oxygen in
http://www.chacha.com/question/what-do-crabs-breat...
Crabs use their gills to extract oxygen from the water, much like a fish. However, crabs can survive for long periods out of water.
http://www.kgbanswers.com/how-do-crabs-breathe/501...
what do crabs breathe?: Marine crabs breathe underwater using gills, which are located in a two cavities
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2 Additional Answers
Crabs are very similar to fish because they both breathe with gills. The gills work by taking water and extracting the oxygen from it! On land they must keep they gills moist!
Crabs are interesting little creatures, they can live both in the water or on land, yet they have no lungs to speak of. Crabs do have gills which makes them very comfortable living in water, and if crabs keeps their gills moist they can enjoy their stay on land with no problem. You can find more information here: http://www.bigsiteofamazingfacts.com/how-do-crabs-live-out-of-water-on-land-and-breathe-air-with-their-gills-when-they-have-no-lungs
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Even though hermit crabs are born in water and have modified gills, they cannot breath underwater for an extended period of time. However, there is a marine hermit ...
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