Curious Kids: why are some shells smooth and some shells corrugated?

Maëlle, 7, wants to know why some shells are smooth, while others are corrugated. It turns out that while corrugated shells are strong, smooth shells can move fast.

How fossil hunting takes me out of myself : NPR

Curious Kids – News, Research and Analysis – The Conversation – page 32

Marine wildlife – News, Research and Analysis – The Conversation – page 1

Seashells by the Seashore

5 Easy Seashell Crafts & Activities to Try with Toddlers

Melted Crayon Sea Shells

The Mystery of Shells - Childhood By Nature

shell - Students, Britannica Kids

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