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.

My Coloured Pencil Journey so far - Liz Steel : Liz Steel

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

KIDS ASK! How Are Seashells Made?

Let's learn About Shells!, What are shells made of?, marine animals

Shell Worksheets Terminology, Types of Seashells, Use of Shells, Non-Marine Seashells

How to Make a Colorful Seashell Art for Kids

Barnacles are learning to morph their shape to evade sea snails •

Pittwater Online News

Shellfish – News, Research and Analysis – The Conversation – page 2

What's this in my crayfish? He died overnight and found this in his head area while clearing the meat to keep his shell. They're solid : r/whatsthisbug

Fun Crafts for Toddlers: Ideas and Tips

Pittwater Online News