ALEXANDRIA, Va. — The recent discovery of sea lamprey in the Potomac River has sparked significant debate. Some believe it is a native species that should be left alone, while others insist it ...

Pet owners are being advised to keep their animals away from parts of the Potomac River after potentially deadly algae mats were detected. An alert was issued by the Maryland Department of Natural ...

animals and people," said Stephanie Flack, the Conservancy’s Potomac Gorge Project director. "The natural areas and biological resources of the Potomac River Gorge are critical to the quality of ...

They eat almost anything and can live outside the water for days. Learn about the Northern Snakehead and its ecological ...

Other invasive fish species in the state include the flathead catfish, which was first found in the Potomac River in the Williamsport area and has steadily increased in population over the last ...