Swimming With an Endangered Giant

Despite the ability to swim faster than a torpedo, the Atlantic bluefin tuna is under serious threat from overfishing. Photographer Brian Skerry swims with these giant fish to show that they're more than just a meal—they are the "thoroughbreds of the sea."

The National Geographic Live series brings thought-provoking presentations by today’s leading explorers, scientists, photographers, and performing artists right to you. Each presentation is filmed in front of a live audience at National Geographic headquarters in Washington, D.C. New clips air every Monday.

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