A harbor seal, also known as a "common," "hair," or "true" seal, takes an evening siesta from chasing salmon by relaxing on the public airplane float near Harris Harbor Thursday morning. Harbor seals give birth to one pup per year. The pup can weigh about 24 pounds at birth and can double its weight in a month. Average adult weight is 180 pounds and five to six feet in length, while males can weigh up to 285 pounds. Seals have a lifespan of 26-35 years and diet on fish and invertebrates. In Alaska seals live along the coast from Dixon Entrance north to Kuskokwim Bay and west throughout the Aleutian Islands. The Tlingit name for seal is tsaa, the Alutiiq name is isuwiq, and the Inupiaq name is qasigiaq.