Secrets of Shark Island

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, giant lobsters, and moray eels share living quarters, humpback whales breed, and mantas and tuna feast on bait in this land of plenty.

On TV

    • Wednesday
    • 9:00pm
    Mar 29
    • Thursday
    • 12:00am
    Mar 30