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Dundas Island and features of its natural history are described, following a visit on 21 January 1978. The island has by far the largest known breeding colony of Hooker's sea lion ‐ 2767 animals were counted ashore, including approximately 1700 pups. The number of breeding females in the world population is now estimated at about 2700, but total population size remains unknown.
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Falla et al. (1979) studied this question.
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