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What Would Happen If Sharks Disappeared?
Shark populations worldwide are under enormous pressure due to overfishing. So what happens to an ecosystem when apex predators like sharks disappear? We talk to Discovery Channel shark advisor Andy DeHart to find out.
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Discovery News:   What Would Happen If Sharks Disappeared?
Shark populations worldwide are under enormous pressure due to overfishing. So what happens to an ecosystem when apex predators like sharks disappear? We talk to Discovery Channel shark advisor Andy DeHart to find out.
Aired: 7/27/10
Views: 273441
Network:  Discovery
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