seabird

名词 seabird:

1. a bird that frequents coastal waters and the open ocean: gulls; pelicans; gannets; cormorants; albatrosses; petrels; etc.
   同义词：sea bird, seafowl

1. Seabirds will fly from here to another place for migration every year.
   海鸟每年都要从一个地方迁徙到另一个地方。