Like I know they move to bigger shells as they grow. But where do these shells originally come from? Who makes them? How?
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If you ever watched SpongeBob, they will wait until someone like Gary passes away and then move into his shell. I believe hermit crabs mostly use snail shells so yeah… they steal Gary’s shell.
Snails have an organ that can produce the material needed to build a shell around them.
There are whole big bunches of shells laying all over the ocean, from all kinds of creatures that grew shells then went to college and left their shells behind.
They mostly use shells left by dead snails. There is a part of a snail’s body called the “mantle” which secretes substances which harden to form/grow/repair its shell.
Though there are many different species of hermit crabs, and some of them use things other than snail shells.
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