Followed for 1 year and 6 months, from July 2007 to January 2009, across 156 recorded positions.
It ranged between 64°N and 71°N, never leaving the northern hemisphere.
The water and air it moved through ran from -11°C to 14°C.
It averaged 20 km a day, every day, across the whole tracking period.
It finished 478 km from where it started, roughly back in the same region.
Of the 320 species followed here, this animal covered more ground than 61% of them.