Watch "The Polar Sea" on Netflix Bangladesh

Richard Tegnér and his companions begin their journey to traverse the Arctic Ocean's Northwest Passage after embarking from Reykjavik, Iceland.

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With the Northwest Passage still frozen in late July, the crew prepares for the journey in a small village in Greenland while awaiting the sea's thaw.

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The crew crosses Baffin Bay to uppermost Canada, where the Inuit village of Pond Inlet has a burgeoning tourist trade, thanks to global warming.

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The ship heads to Lancaster Sound, an area so filled with wildlife that scientists look to it to understand the biological effects of climate change.

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The grueling journey is halfway through, but even with the ice now melting, the experience proves too much for some of the group.

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Along the Northwest Passage, a small coastal village proves that encroaching modern civilization and government domination don't always work.

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By late August, the team is at the halfway point of its journey at Cambridge Bay, an ancient crossing place undiscovered until the 20th century.

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Along the melting coastline, Tegnér and his crew see increased evidence of the effects of climate change when they observe the Arctic turning green.

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As the vessel enters Alaska, the wild quality of the terrain changes: Oil rigs and minerals illustrate the stark contrast between commerce and nature.

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Tegnér and his crew exit the Bering Strait to complete their journey, which has one last climate change surprise: a community sinking into the sea.

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