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once in a wile they shed maybe every4 months they always need bigger shells they live up to 2 and a half years or more if it is a healthy crab you should clean there tank/cage or whatever it is in and every couple days so keep your crab healthy

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13y ago

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Related Questions

Is crabs having to change shells a behavioral adaptation?

No, they shed their shells regularily. that is where we get soft shell crabs from; crabs who have just shed their shells and are cooked. Like a snake shedding their skin.


What type of shells do hermit crabs live in when they are in the wild?

Hermit crabs live in sea snail shells so the hermit crabs go in which ever shell they think will be comfy, like turbo shells. Also hermit crabs love shells with a pearl color inside.


Do crabs live in shells?

No, they do not


Why do crabs need shells?

Crabs need shells because there abdomen is very soft and sensitive and the shell protects them.


Where do sand hermit crabs get their shells?

Empty snail shells.


Are hermet crabs born with a shell?

No. Hermit crabs grow from eggs, in their adult phase they seek out abandoned shells to occupy, and scavenge new ones as they outgrow their old shells. Typically they use the old shells from sea snails, occasionally bivalve shells, and sometimes pieces of hollow rock or wood.


How do crabs hide from enemies?

in their shells


Why do crabs have hard shells?

to protect them


Do crabs molt there shells?

yes they do?


Why do blue crabs have shells?

because they are called blue crabs and also they have a cell in there body which gives them the power if changing the colour if there shells ?


What is the difference between soft shell and hard shell crabs?

Soft shell crabs are soft and are eaten with the entire crab. Soft shell crabs are actually hard shell crabs that have shed their shells to allow for growth. Shells do not grow with the crab. Crabs retain a soft shell when they shed their hard shells; then that soft shells begins to harden-up as the crab grows.


Do crabs shells fall of?

No hermit crabs inspect a new shell inside of their cage the they pull them self out of the shell and then drop them self into a new shell. there are videos on youtube.com of crabs changing shells. so provide your crab with extra shells. i am a hermit crab owner i have watched my crabs change shells it is called molting.