Fun Fact: Snails can regenerate their eyes
When a human or animal loses an eye it’s nothing short of disastrous, but when a snail loses an eye it’s no big deal, they’ll just grow a new one. Within a few weeks (usually about 1 or 2 weeks) these cells become fused with calcium and harden the outer coat of the shell. In an urgent situation, when snails do not have enough calcium in their tissue, they may absorb calcium from the rest of the shell.
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