After two months trekking over ice floes, the team plunges beneath the icy waters of the North Pole where they discover an awe-inspiring world.

Dive up to 150 meters into the polar abyss of Greenland's fjords.

When the crew's ship becomes beset in the ice it provides them with an exceptional opportunity to study the effects of climate change above, and beneath, the ice sheet, revealing the never-before-seen depths of this fascinating world.

Take a fresh expedition through the Northwest Passage, a mythical seaway that symbolizes the very evolution of the polar world.

In the Polynesian Islands of the South Pacific, the team experiences the coral reefs of the deep, one of the world's least-known ecosystems, where they study how the reefs function, with the hope of capturing on film the corals spawning.