Articles on Mollusks

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Seashells can tell you a lot about the sea creatures that made them. Olga Pankova/Moment via Getty Images

Where do seashells come from?

Seashells are the skeletons of sea creatures – and they’re older than you might think.
One distinction between a snail and a slug: The snail has a shell. maxphotography/Moment via Getty Images

Why are snails and slugs so slow?

These members of the mollusk family may be slow, small and slimy, but they are an indispensable part of the ecosystem.

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