Ascension Island, a remote Mid-Atlantic outpost famous for its big game fishing, is under siege. Tiger sharks, hammerheads, even great whites, lured here every year by the bountiful reefs, are displaying aggressive behavior, culminating in the island's first shark attacks in its history. Join us as we dive into the mystery behind the altered behavior of these hungry predators, and explore whether efforts to bring this delicate ecosystem back into balance is a case of too little, too late.

Shark Ganglands

It follows wildlife, including monarch butterflies and gray whales, that migrate to or through Mexico.

Migrating to Mexico

Histoires de lionnes

South Africa is home to the world's deadliest sharks and one of them has a dark side - The Ragged Tooth. Every two years, hundreds of Ragged Tooth sharks swim 1500 kilometers along the South African coast, in order to mate. For each, this epic journey is a fight for survival. But for one captive female Ragged Tooth the stakes are even higher.