family Spheniscidae, Spheniscidae - comprising all existing penguins

sphenisciform seabird - flightless cold-water seabirds: penguins

Adelie, Adelie penguin, Pygoscelis adeliae - medium-sized penguins occurring in large colonies on the Adelie coast of Antarctica

Aptenodytes patagonica, king penguin - large penguin on islands bordering the Antarctic Circle

Aptenodytes forsteri, emperor penguin - the largest penguin; an Antarctic penguin

jackass penguin, Spheniscus demersus - small penguin of South America and southern Africa with a braying call

crested penguin, rock hopper - small penguin of the Falkland Islands and New Zealand