What's inside a clam? A retractable foot, a siphon for sucking up water, powerful muscles, and, sometimes, a pearl. And you thought oysters were fancy. Following is the transcript of the video.

Come nightfall, the giant clam closes its shell. The mantle on its shell also contains two holes, the inhalant and exhalant ...

Geoduck (pronounced “gooey-duck”) is a clam with an oversized siphon (some people call it the neck) that bears an unfortunate resemblance to a certain part of the male anatomy; the siphon and ...