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Can a turtle tuck its head all the way inside its shell?
Turtle shells evolved over the course of 300 million years, but self-defense wasn't the initial driver, researchers think.
Researchers played ancient shells unearthed from Catalonia, Spain, and detected a sound similar to what is produced by French ...
If someone hands you a large, spiral seashell, chances are that your instinct will drive you to hold it up to your ear.
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