Followed for 1 year, from July 2013 to July 2015, across 387 recorded positions.
It ranged between 61°N and 73°N, never leaving the northern hemisphere.
The water and air it moved through ran from -24°C to 6°C.
It averaged 28.8 km a day, every day, across the whole tracking period.
It finished 449 km from where it started, roughly back in the same region.
Of the 320 species followed here, this animal covered more ground than 76% of them.