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How the Volcanic Islands of the Pacific Came to Be

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How the Volcanic Islands of the Pacific Came to Be

Short | 02:52

Volcanic islands, such as San Benedicto, are part of a 25,000-mile volcanic chain that runs around the Pacific Ocean. It's known as the Ring of Fire.

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The Revillagigedo Islands, about 200 miles off the coast of Mexico, may not look like much on the surface, but beneath is one of nature's best-kept secrets: a home to some of the greatest concentrations of fish in the world. This is the only natural juncture for miles in an otherwise empty Pacific Ocean, and a crucial area for migrating sharks and other apex predators. Enter a world where whitetip sharks share living quarters with giant lobsters, humpback whales breed and thrive, and scavengers like mantas and tuna feast on plentiful bait.

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