The Harbour Seal (Phoca vitulina) is a common marine mammal found along the coasts of the Northern Hemisphere. They are characterized by their spotted coats, which can vary in color from gray to brown. Adult Harbour Seals typically weigh between 100 to 300 pounds and can grow up to 6 feet in length. They are known for their playful behavior and can often be seen basking on rocks or beaches. Harbour Seals primarily feed on fish and invertebrates, using their sensitive whiskers to detect prey in the water. They are excellent swimmers, capable of diving to depths of over 600 feet in search of food. These seals are social animals, often found in groups, but they can also be solitary.