For National Geographic photographer Paul Nicklen, the Arctic is home.
Nicklen was raised on Baffin Island, Nunavut, in Northern Canada. There he learned to navigate the ice, read weather, and find shelter in a landscape that most consider inhospitable.
As a photographer, Nicklen has captured the stark beauty of both the Arctic and Antarctic, showing what life is like on top of the ice and under the freezing waters. He has also documented the changes these environments are undergoing as a result of climate change.
The images are meant to "convey the surreal beauty and magic of the extraordinary and endangered ecosystems that are so close to my heart", he wrote on Facebook.
Here's a selection of photos from Nicklen's new book.
"We must act now to save the diversity of life in the polar regions of the Arctic and Antarctic and enact positive change for our planet," Nicklen wrote on Facebook.
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