| Together with the fur seals, they constitute the family Otariidae, collectively known as eared seals. |
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| Otariidae are in the process of species divergence, much of which may be driven by local factors, particularly latitude and resources. |
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| Of the three extant families, the Otariidae and Odobenidae are grouped in the superfamily Otarioidea, while the Phocidae belong to the superfamily Phocoidea. |
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| Fur seals are any of nine species of pinnipeds in the Otariidae family. |
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