VIDEO: Sneak Peek - Final Episode of Nat Geo's CONTINENT 7: ANTARCTICA

Below, check out a clip from the final episode of CONTINENT 7: ANTARCTICA that airs on Tuesday, Dec. 20 at 10/9c on Nat Geo. In the final episode, a team of scientists spot several killer whales along the icy waters of the Antarctic that they must collect biopsies from to support their research. In order to collect the blubber and skin samples, they have less than a second to get to the edge of the ice shelf without falling in and use a rifle to shoot THE WHALE before it goes below the water.

These whale biopsies are essential to gain a better understanding on the species and how they're impacted by climate change.

About the series: In Antarctica, that's just another day at the office. Antarctica is the coldest, driest, windiest continent on the planet. It's 5.4 million square miles of desert. Researchers risk these extremes to conduct groundbreaking and life-changing science, supported by small outposts dedicated to keeping them alive. Life on an Antarctic base is like a fully operational extraterrestrial facility - a space station on ice.

Through a partnership between National Geographic, National Geographic Studios (the network's in-house television production unit), New Zealand Antarctic Research Institute and Antarctica New Zealand, viewers will have unprecedented access to the leading scientists of New Zealand's Scott Base and their missions, and the men and women behind the scenes who are responsible for keeping everyone alive. CONTINENT 7: ANTARCTICA, a cross-platform six-episode series, will air globally on National Geographic Channel in 440 million homes in 171 countries and 45 languages. The series will also be covered extensively on nationalgeographic.com and on the unparalleled portfolio of social media assets at our disposal.

Photo credit: Marcus Arnold)

VIDEO: Sneak Peek - Final Episode of Nat Geo's CONTINENT 7: ANTARCTICA