The genome of an influenza virus from a pilot whale: Relation to influenza viruses of gulls and marine mammals

•The first full genome of a cetacean influenza virus (from a pilot whale) is presented.•Sequence data reveal a transspecies infection of the diseased pilot whale.•This virus is characteristic of gulls and terns of the western hemisphere.•This virus exhibits a rare H13N2 genotype and may have ceased in the 1980s.•Virus isolates of a baleen whale and pinnipeds are characteristic of geese and ducks.