How many species of penguins are there?
Most modern field and conservation references recognize about 18 living penguin species in the family Spheniscidae, from the tiny little blue penguin (around 30 cm tall) to the emperor penguin (up to 130 cm tall). Those birds span six genera: Aptenodytes, Pygoscelis, Eudyptula, Spheniscus, Megadyptes, and Eudyptes. Taxonomists still debate the rockhopper complex, so some lists use 17 or 19. Penguin Place follows the split and profiles 19 living taxa, including western, eastern, and northern rockhoppers as separate species pages.
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Where this answer comes from
Reference bodies behind our basics answers. Links last checked August 5, 2026.
- Smithsonian Ocean Portal - Penguin biology, anatomy, and breeding explainers.
- BirdLife Data Zone - Species accounts, distribution, and population summaries.
- Penguins International - Species explainers and conservation context focused on penguins.