Followed for 3 years and 7 months, from May 2021 to January 2025, across 2,623 recorded positions.
It ranged between 50°N and 51°N, never leaving the northern hemisphere.
The water and air it moved through ran from 6°C to 18°C.
It averaged 21.6 km a day, every day, across the whole tracking period.
It finished 438 km from where it started, roughly back in the same region.
Of the 320 species followed here, this animal covered more ground than 84% of them.