Followed for 2 years and 11 months, from August 2018 to July 2021, across 479 recorded positions.
It ranged between 59°N and 84°N, never leaving the northern hemisphere.
The water and air it moved through ran from -22°C to 2°C.
It averaged 215.8 km a day, every day, across the whole tracking period.
It finished within 5 km of where it started, a round trip closed almost exactly.
No other animal in this catalog of 320 species covered more ground.