Under Thin Ice

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Under Thin Ice follows Canadian extreme divers and cinematographers Jill Heinerth and Mario Cyr on a journey to investigate how Arctic wildlife is adjusting to global warming.

The Arctic is a majestic world, home to wildlife rarely seen in the south: bowhead whales, polar bears, narwhals, walrus, seals, zooplankton, algae. At the end of each spring, after long months of darkness, the sun shines for 24 hours a day and all living species gather at the floe edge — where ice meets open ocean — for a feeding frenzy.

But global warming is threatening this ecosystem. Temperatures are rising and the ice sheet is melting at an alarming rate. In the last 40 years, more than 75% of the summer ice cover has disappeared.

Diving with whales, walruses and polar bears, Jill and Mario bring viewers into a majestic underwater world trying to adapt to ice loss and climate change.

Viewers will travel on ice floes with Jill and Mario to Tallurutiup Imanga (also known as Lancaster Sound) in Nunavut, Canada, where they will dive with belugas and narwhals in the open Arctic Ocean. They will follow them to Greenland’s Disko Bay to explore the underside of icebergs and discover the luminescent world of algae. Back to Canada in the Naujaat region, they will swim with walruses and polar bears, the supreme predators of the Arctic.

Filmed in stunning 4K, Under Thin Ice brings viewers into an awe-inspiring underwater world threatened by melting ice and rapid climate change.




Documentary Science/Nature/Technology

Other Festivals

Under Thin Ice won the “Best of Fest Award” at the Colorado Environmental Film Festival, the “Gold Alpine Camera” at the Mountainfilm International Film Festival in Austria, and the “Special Media Award” at the Arctic Open Film Festival in Russia.

Under Thin Ice has been nominated for the Robert Brooks Award For Documentary Long Format Cinematography by the Canadian Society of Cinematographers.

Under Thin Ice was also part of the Official Selection for the following film festivals:
Environmental Film Festival in the Nation’s Capital – Washington, DC, USA
Green Image Film Festival – Tokyo, Japan
International Ocean Film Festival – San Francisco, CA, USA
Elements International Environmental Film Festival – Vancouver, BC, Canada
International Festival of Winter Cinema – Edmonton, AB, Canada
Boreal Film Festival – Anchorage, AK, USA
Amundsen-Scott South Pole Station Earth Day Film Fest – Antartica

Website/Social Media


Creative Team


Denis Blaquière


Natalie Dubois; Executive Producers: Arnie Gelbart, Mario Cyr, Natalie Dubois


Denis Blaquière, Natalie Dubois


Denis Blaquière, Géraldine Alladio

Production Company

Galafilm Productions (Under Thin Ice) Inc.

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