Have you ever held a handful of scallop shells and wondered why they are colored differently? Or where the holes in a clam shell came from? And what is a mermaid's purse, exactly? Here's a fun guide ...

A geoduck shell found scatted among other shells discarded by the Tseshaht peoples 500 to 1000 years ago suggests that the community had been harvesting and eating geoduck for centuries. Lorraine ...