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There are different rumours about this, however, crabs are said to be omeosmotic euryhaline (can tolerate wide ranges of salinity by maintaining constant the body fluids concentration), but quite different waters will surely shock and kill them. This really depends on the crab species in question, and also what you mean by ocean water. First, if you mean full strength sea water, most crabs can tolerate less saline water, and even adjust to changes in salinity. But as a rule of thumb, you need to consider the natural habitat from which the crab originated. If it came out of the ocean, it should stay in full strength sea water. If it came out of an estuary, it can tolerate less salt, and probably changes in salinity also, particularly if the estuary experiences periodic changes in tidal height. But extreme changes in salinity, especially if they are sudden, are likely to shock and kill a crab, as the previous commenter noted.
Wiki User
∙ 15y ago
Wiki User
∙ 16y agoyes they can stay out of water for 9999 hours
Wiki User
∙ 13y agoNo It digs into the sand to hide from predators
Wiki User
∙ 12y agoNot nesacarly. Crabs techinically need sunlight for the plants that there prey eat to be drawn near them. In this way they need sunlight but don't actually need it for themselves.
Anonymous
the crab needs the salt water
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What crabs live in the sand?
hermit crabs i guess
Do sand crabs live in salt water?
no , crabs live in fresh water
Where do sand dollars clams and sand crabs usually live in?
They live on sandy shores! Hope this helps.
Do sand crabs need air?
Yeas they do.
Which Edible shellfish is found in sand?
There are many edible shellfish who live in the sand. Many people enjoy eating clams and mussels. Clams and mussels are bivalve mollusks who live in the sand. People also like crabs. Crabs are crustacean shellfish who live in the sand.
What color or colors are sand crabs?
First of all, sand crabs are not hermit crabs. Sand crabs are usually tan, white, brownish, or other flesh-like colors. If you catch one, let it go--They need water.
Do hermit crabs need gravel or sand?
Sand is better so they can dig.
Can Caribbean hermit crabs live in all types of sand?
no
What are all the animals that live on the beach?
Crabs, birds , turtles , sand fleas , hermit crabs, sand dollars , and a lot of other animals in the sea to ;)
Can hermit crabs live in moonsand?
No. They need to bury themselves in sand, and moonsand pack together too much. You can buy normal sand for a sand box to put them in, though. There is special sand that you can add sometimes to their cage too.
What color or colors are crabs?
First of all, sand crabs are not hermit crabs. Sand crabs are usually tan, white, brownish, or other flesh-like colors. If you catch one, let it go--They need water.
Where crabs live?
well mostly crabs live at the rockey shore and if you want to find huge ones you will have to do scuba diving.
