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Australian Sea Lion off Adelaide, 2000

Photo: Australian sea lion

An Australian sea lion mugs for the camera off Adelaide, Australia. These highly endangered sea mammals have been hurt by decades of overhunting.

(Photo shot on assignment for, but not published in, "Great White: Deep Trouble," April 2000, National Geographic magazine)

Photograph by David Doubilet

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Photo Tip of the Week

Long Exposures

When making long exposures, use a remote release to avoid camera movement. If you don't have a remote release, use the camera's self-timer.

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