Helen Scales

Dr. Helen Scales is a freelance science writer, documentary-maker and marine biologist based in Cambridge, England. Her stories about the ocean have appeared in Natural History Magazine, the Guardian, BBC Wildlife Magazine and National Geographic News. She makes radio documentaries for the BBC and teaches marine biology at the University of Cambridge. Her latest book, Spirals in Time, examines the secret life and curious afterlife of seashells.

Spirals in Time: A Walk at the Seashore

When I set out to write a book about mollusks (called Spirals in Time ), I wasn't quite prepared for just how many animals I would get to know. There are somewhere between 100,000 and 200,000 mollusk species alive today,...