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South Marble Island sea lions 1

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A Steller sea lion barks at other sea lions on South Marble Island in Glacier Bay National Park and Preserve in southeast Alaska. Male sea lions, called bulls, will bark loudly to defend or establish their territories. To tell the difference between sea lions and seals, sea lions have an ear flap where seals have only a small opening for their ear. Adult male Steller sea lions are noticeably larger than females (sexual dimorphism) and further distinguished by a thick mane of coarse hair. Like other pinnipeds, the fur of Steller sea lions molts ever year.

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South Marble Island sea lions 1.jpg
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© John L. Dengler
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8256x6195 / 21.6MB
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Glacier Bay National Park, Alaska
A Steller sea lion barks at other sea lions on South Marble Island in Glacier Bay National Park and Preserve in southeast Alaska. Male sea lions, called bulls, will bark loudly to defend or establish their territories. To tell the difference between sea lions and seals, sea lions have an ear flap where seals have only a small opening for their ear. Adult male Steller sea lions are noticeably larger than females (sexual dimorphism) and further distinguished by a thick mane of coarse hair. Like other pinnipeds, the fur of Steller sea lions molts ever year.