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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Conservation status | Notes | ||
| 1 | Sphenisciformes | Spheniscidae | King Penguin | Pingüino Rey | Pinguim-rei | Aptenodytes patagonicus | Native |
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| 2 | Gentoo Penguin | Pingüino de Vincha | Pygoscelis papua | Native |
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| 3 | Magellanic Penguin | Pingüino Patagónico | Pinguim-de-magalhães | Spheniscus magellanicus | Native |
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| 4 | Western Rockhopper Penguin | Pingüino Penacho Amarillo | Pinguim-de-penacho-amarelo | Eudyptes chrysocome | Native |
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| 5 | Carnivora | Otariidae | South American Fur Seal | Lobo Marino de Dos Pelos | Arctocephalus australis | Native |
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| 6 | South American Sea Lion | Lobo Marino de Un Pelo | Leão-marinho-da-patagônia | Otaria flavescens | Native |
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| 7 | Phocidae | Southern Elephant Seal | Elefante Marino del Sur | Mirounga leonina | Native |
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| 8 | Artiodactyla | Delphinidae | Killer Whale | Orca | Orcinus orca | Native |
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