Kids discovered a pearl inside a freshwater clam in Maryland, officials said. Screengrab from the Maryland Department of Natural Resource's post on Facebook. A couple of kids “enjoying the outdoors” ...

A group of middle schoolers made a surprising discovery while "enjoying the outdoors" at river in northern Maryland over the weekend. The kids were exploring Winters Run, a 14-mile river in Harford ...

Clambakes, fried clams, clam diggers, clam shacks — we usually associate clams with the ocean. You may have also seen freshwater clams in rivers and lakes. But did you know there are clams that live ...

Manila clams, an invasive saltwater clam species, have spread to the Atlantic Ocean coast.

Prepared by the Oceanography and Limnology Program, Smithsonian Institution, for the Environmental Protection Agency (page iii). "Project 18050 ELD, contract 14-12-894." siris_sil_34312 ...