The harbor seal is a common marine mammal found along the coasts of the northern hemisphere. They typically have a spotted coat that varies in color from gray to brown. Harbor seals are known for their rounded bodies and large eyes, which help them see underwater. They primarily feed on fish and invertebrates. These seals are often seen resting on rocks or beaches, where they haul out to bask in the sun. Unlike some other seal species, harbor seals do not form large colonies and are generally more solitary. They are also known for their agility in the water, using their strong front flippers to swim efficiently.