https://zooologist.com/how-fast-can-a-polar-bear-swim/
- In the Beaufort Sea the longest swimming ldistance is covered by an adult female polar bear which is about 427 miles i.e. 687 km.
- Scientists recorded that she took the maximum time and swam continuously for about 9 days i.e. 216 hours.
If I'm not mistaken they were originally called 'Water Bears'..