<p>Smaller fish keep their distance when a blacktip reef shark swims amongst them in shallow water in the Maldives.</p> <p><i>(This photo and caption were submitted to <a href="http://yourshot.nationalgeographic.com/">Your Shot.</a>)</i></p>

Blacktip Reef Shark, Maldives

Smaller fish keep their distance when a blacktip reef shark swims amongst them in shallow water in the Maldives.

(This photo and caption were submitted to Your Shot.)

Photograph by Paul Wilkinson, Your Shot

Photo of the Day: Best of July 2011

View the most popular Photo of the Day images from July 2011, from National Geographic.

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