Shark Alley (2015)

Hundreds of sharks follow and feed upon millions upon millions of sardines as the fish migrate up the south-eastern coast of Africa. Bronze Whalers, Ragged-Tooths, Hammerheads, Black-Tips, Duskies, Tigers, Bulls and the Big Daddy of them all - the Great White - are joined by dolphins, Cape gannets, seals and even a whale. It's ambush after ambush in a relentless series of attacks that climaxes with a humongous feeding frenzy. It's the largest predation of its kind on earth.