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Template:POTD/2008-08-22

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Northern Elephant Seals fighting
Two male Northern Elephant Seals fighting fiercely for mates. These true seals have a highly polygynous mating system, with a successful male able to impregnate up to 50 females in one season. Unsuccessful males will not mate at all, while successful males have harems of 30 to 100 females.Photo credit: Mike Baird