An arctic fox of the blue color morph is pictured in this camera-trap photo taken in Svalbard, Norway, July 23, 2018. Scientists have mapped the bizarre journey of an arctic fox who travelled over 3,506 km (2,000 miles) across the arctic ice from Norway's Svalbard islands to northern Canada in 76 days. Eva Fuglei via REUTERS

An arctic fox of the blue color morph drinks water on Ellesmere Island, Canada, in this undated picture obtained by Reuters July 3, 2019. The fox's journey was tracked by researchers at the Norwegian Polar Institute after they fitted the animal with a tracking device in March 2018. Eva Fuglei/via REUTERS

An arctic fox of the blue color morph is seen in Svalbard, Norway, in this undated picture obtained by Reuters July 3, 2019. The fox spent 21 days travelling 1,512 km from Svalbard to Greenland before continuing to Ellesmere Island in Canada. Eva Fuglei/via REUTERS

A researcher holds a female Arctic fox with a satellite collar, which allows scientists to track their movements, in Krossfjorden, Svalbard, Norway, July 29, 2017 in this image taken from social media. Elise Stromseng via REUTERS

An arctic fox of the blue color morph is pictured in this camera-trap photo taken in Svalbard, Norway, July 23, 2018 obtained by Reuters July 3, 2019. Eva Fuglei via REUTERS