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When a huge predator catches you off guard, will you know how to defend yourself? Learn why sharks attack and what you can do to keep your next encounter from being your last.
Get up close and personal with the voracious tiger sharks of Australia's Shark Bay in this Field Tales feature.
See gray reef sharks swimming in a French Polynesian lagoon as tropical fish teem below.
Think your photo is the "Ultimate" winner? Submit your best in six different categories.
See how Lipton is dedicated to sustainable agriculture. View pictures from Boyd Matson's trip to Africa.
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