The primary purpose of the passage is to
present evidence that several phocids species use the maternal fasting strategy
explain why the maternal strategy typically used by phocids is different from the maternal strategy used by otariids
argue that zoologists 'current understanding of harbor seals' maternal strategy is incorrect
describe an unexpected behavior observed in harbor seals and propose an explanation that may account for the behavior
describe evidence concerning the maternal strategy of the harbor seal and suggest that the harbor seal belongs to the otariid rather than to the phocids family
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