The first programme shows how sharks are the ocean's great predators, living in every ocean and hunting in every way. Blacktip sharks hunt in huge packs and herd fish into baitballs, tasselled wobbegongs are ambush hunters, Greenland sharks live under the arctic ice, and whitetip reef sharks are the masters of hunting at night. The finale shows the great white in its hunt for fur seals off the coast of South Africa.
In the wild North Atlantic, massive whale pods, giant turtles and monstrous jellyfish ride the Gulf Stream, a huge ocean current that becomes a migration superhighway and helps warm northern Europe. Meanwhile, fishermen battle for survival in mountainous seas as they try to reap the current's natural fertility.
David Attenborough narrates this astonishing story of a wild cheetah family. Known for being fast, captivating and extremely elusive, a new insight into their remarkable lives is offered by cameraman Kim Wolhuter. For nearly two years, he walked alongside a wild cheetah mother and her young family to unravel in intimate detail what it takes to turn tiny cubs into accomplished predators.
Traveling is extremely arduous for microscopic sperm -- think of a human trying to swim in a pool made of...other humans.