S2.E24 ∙ On a Mission: Poisonous Killers

A visually stunning chronicle of what it is like to live in Antarctica for a full year, including winters isolated from the rest of the world, and enduring months of darkness in the coldest place on Earth.

Two men explore the high-altitude wilderness of Tibet with many cameras, filming wildlife from a respectful distance and searching for the rare snow leopard.

Diving Into The Darkness is a jaw-dropping yet intimate portrait of cave diving icon Jill Heinerth, and the nail-biting challenges and risks she's faced to go where no man or woman has gone before.

Meet Mara, an endearing lion cub striving to be like her mother; Sita, a cheetah and single mother of five; and Fang, a proud leader of the pride who must defend his family from a rival lion.

Pioneering scuba diver Valerie Taylor, who has dedicated her life to exposing the myth surrounding our fear of sharks.

THE LONELIEST WHALE is a cinematic quest to find the "52 Hertz Whale," which scientists believe has spent its entire life in solitude, calling out at a frequency that is different from any other whale. As a group of scientists mount an expedition to locate this elusive creature, the film delves into the profound interconnection that exists between whale culture and our own.