The Harbor Porpoise is a small marine mammal found in coastal waters of the North Atlantic and North Pacific Oceans. Typically measuring between 5 to 6 feet in length, they have a robust body and a rounded snout. Their coloration is usually dark gray on the back and lighter on the belly, providing camouflage in the water. These porpoises are known for their shy nature and prefer to stay close to shore, often inhabiting bays, estuaries, and rivers. They primarily feed on fish and squid, using echolocation to locate their prey. Conservation efforts are in place to protect their populations from threats like fishing nets and habitat loss.