The Pacific loon (Gavia pacifica) is a species of loon found in the Pacific Ocean. It is a medium-sized loon, with a length of 6676 cm (2630 in) and a wingspan of 122152 cm (4860 in). The Pacific loon has a black head and neck, with a white throat and breast. The back is black, and the wings are black with white tips. The bill is black, and the legs are black with yellow feet.
The Pacific loon is a migratory bird, breeding in North America and wintering in the Pacific Ocean. The breeding range extends from Alaska and Canada to the northern United States. The wintering range extends from the Gulf of Alaska to Baja California. The Pacific loon is a piscivore, feeding primarily on fish. It also eats invertebrates, such as squid and octopus.