Followed for 3 years and 11 months, from June 2008 to May 2012, across 502 recorded positions.
It ranged between 37°N and 59°N, never leaving the northern hemisphere.
The water and air it moved through ran from 6°C to 16°C.
It averaged 18.8 km a day, every day, across the whole tracking period.
It finished within 9 km of where it started, a round trip closed almost exactly.
Of the 320 species followed here, this animal covered more ground than 84% of them.