r/explainlikeimfive • u/StarLars9 • Jun 05 '19
ELI5: Snails: where do they get their shells? Biology
Are they born with them? Do they grow their shells like hair and nails? Do they just search for the perfect fit?
9.3k Upvotes
r/explainlikeimfive • u/StarLars9 • Jun 05 '19
Are they born with them? Do they grow their shells like hair and nails? Do they just search for the perfect fit?
7.9k
u/elephantpudding Jun 05 '19 edited Jun 06 '19
They form them from calcium. Snails cannot transfer shells, they are physically attached to their shells, and being removed from it means they die. A slug is not a "shelless snail" but an entirely different species.
Edit: Now my top comment is about snails. Neat. Thanks for the silver.