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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Conservation status | Notes | ||
| 1 | Charadriiformes | Alcidae | Tufted Puffin | Frailecillo Coletudo | Fratercula cirrhata | Native |
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| 2 | Suliformes | Phalacrocoracidae | Double-crested Cormorant | Cormorán Orejudo | Nannopterum auritum | Native |
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| 3 | Carnivora | Otariidae | Steller Sea Lion | León Marino de Steller | Leão-marinho-de-steller | Eumetopias jubatus | Not listed |
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| 4 | Phocidae | Harbor Seal | Foca de Puerto | Foca-comum | Phoca vitulina | Not listed |