The clearest threat to the Refuge comes in the form of the 2018 congressional budget reconciliation process.
Senators will vote on whether to repeal the US Fish and Wildlife Final Rule, which prevents intensive hunting techniques on National Wildlife Refuges.
This interactive map profiles some of the most important marine areas in the US Arctic, as identified by the best available science.
Take our quick quiz to see just how knowledgeable you are about one of nature's most elusive groups of birds.
Order your hard copy of one of our ecological atlases.