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Lionfish Are a Plague. Can Training Sharks to Eat Them Work?

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Lionfish Are a Plague. Can Training Sharks to Eat Them Work?

Short | 02:46

Lionfish, which are native to the Indo-Pacific but were accidentally introduced to the Caribbean, are decimating native fish species. To help limit their damage, scientists are teaching sharks to prey on them.

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Cuba's enforced isolation has resulted in the unlikeliest of marine reserves: a huge, rambling archipelago known as Jardines de la Reina, or "Gardens of the Queen." Stretching around 140 miles along the southern coast of Cuba, it's one of the longest barrier reef systems in the world. Get an up-close look at Fidel Castro's diving playground, a forgotten ocean paradise unseen for half a century, and witness exotic species rarely seen elsewhere in the region. It's the lost jewel of the Caribbean, but how long can this pristine wilderness survive?

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