I understand that snails are born in eggs, but how do they get that massive shell and they aren’t multicolored? Like hermit crabs get different shells as they grow.. right?
In: Planetary Science
Snails grow their shells, as do most creatures with shells. They are made of calcium carbonate, which is a very simple molecule that they just kind of extrude. The shells are striped because of impurities that can get caught up in the next layer of shell.
Hermit crabs are unique because they find shells from other creatures. As they grow, they need to find a new shell that fits them, since they are not growing their own shell.
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