this post was submitted on 06 Oct 2023
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From an evolutionary perspective, this is true!
Slugs have evolved multiple times from snails, due to calcium poverty, dividing off into separate species when they couldn't get the resources for shells
That's really fucking cool.
I believe crabs have evolved independently several times too
For different reasons.
Slugs evolve because it wasn't economically viable to be snails anymore.
Crabs evolve because it's so cool to be a crab