Wander through your backyard or walk along a stream and it’s likely you’ll see a snail – small, squishy animals with shells on their backs. Snails are found in water, whether in salty oceans, rivers ...

Animals have evolved crab-like bodies at least five times throughout history, a process known as carcinization.

This article was originally featured on The Conversation. Wander through your backyard or walk along a stream and it’s likely you’ll see a snail – small, squishy animals with shells on their backs.

You’re in good company if you’ve combed the shoreline for shells, marveled at the glinting, microscopic pieces that make up the sand, or held a snail shell up to your ear listening for the ocean or ...

Hermit crabs are small crabs that carry shells on their backs, both for a home and for safety. But with shells being harder to find year after year, hermit crabs have had to spend more time in shells ...