Ocean Facts: How do clams get their shells

500-year-old Clams Recorded Changes in Ocean Climate, Research

The History, Myth, and Future of the Giant Clam - Atlas Obscura

Experiment: Recording the Muscles of Clams

Ask Dr. Universe: When and why would a clam open its shell?

Clam - Wikipedia

Clam shells help scientist interpret 1,000 years of ocean history •

Everything There Is To Know About Cockle Shells » Sand Dollar Shelling

Let's talk about shells, Marine Conservation Society

Ask the Aquarium - Tiny coquinas live where surf meets sand

Quahog - National Maritime Historical Society

A Beachcomber's View: A Closer Look at Wampum