Oceans are the cradle of life on our planet, and remain today our wildest and most biodiverse frontier. But for how long? Since the turn of the century, marine life all over the world has been hit by a perfect storm, overfishing, pollution and global warming. While environmentalists and researchers are sounding the alarm, many people don’t seem concerned. That is not the case for extreme diving experts Mario Cyr and Jill Heinerth.

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For decades, both have witnessed, first-hand, dramatic changes in aquatic life behaviour occurring in polar regions at an unpredecented rate and scale; from microscopic plankton to one-hundred-ton blue whales. Diving under the ice pack with walrus, swimming along with mighty polar bears or crawling inside giant icebergs, our daring aquanauts have also felt the effects of global warming in their very bones.

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Mario and Jill want survival of marine life to become a planetary personal affair. They are embarking on a daring expedition to Polar seas to share their amazement and concerns in the new feature length documentary Under Thin Ice. This passionate testimony to the splendour and resilience of underwater life at the ends of the Earth will leave nobody cold.