Off the coast of South Africa, fish bunch together to survive. But these "bait balls" attract swarms of predators, from hungry seabirds to sharks and whales.
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Read about South Africa's marine habitats—and the challenge of protecting them—online in National Geographic magazine:
http://goo.gl/4b3SnL

VIDEOGRAPHY: Dan Beecham and Save Our Seas Foundation
EDITOR: Spencer Millsap

Giant Predator Swarm Attacks Fish | National Geographic
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