Laysan ducks or Laysan teal, Anas laysanensis, swimming, female in front with male behind; the rarest duck in the world (Critically Endangered Species), the population was once reduced to 7 adults and 5 juveniles; a member of the mallard clade of dabbling ducks, Eastern Island, Midway Atoll, Midway National Wildlife Refuge, Papahanaumokuakea National Monument, Northwest Hawaiian Islands (North Pacific Ocean)

Credit to: BluePlanetArchive / Doug Perrine

Image dimensions: 5400x3600