Every shell was once part of a living sea creature. But what are they? How are they formed? And what animals use them? Our expert guide has the answers
Seashells expert guide: what are they, where do they come from
Fascinating Shells: An Introduction to 121 of the World's Most
Random House Audubon Field Guide: Seashells by Harald Rehder - 9780394519135
National Audubon Society Field Guide to North American Seashells
Close-Up Photography: Capturing the Details of Shells
Shells—The Ultimate Beach House
British seashell guide: how to identify and where to find
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10 Sea Shell Activities for Kids and Make Crystal Sea Shells
Shellebrity Guide
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Seashell - Wikipedia
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Seashell - Wikipedia