I found a couple of websites that report on the near extinction of some whale species and tendency toward over-harvest of polar bears in almost all regions that allow hunting. Apparently some scientists also believe that the loss of sea ice may result in a drop in polar bear numbers of 30 to 50% by mid-century.
https://www.scientificamerican.com/article/world-s-whaling-slaughter-tallied-at-3-million/
https://royalsocietypublishing.org/doi/10.1098/rsos.190368
https://www.frontiersin.org/articles/10.3389/fcosc.2022.836544/full (” Contrary to predictions, incidents of over-harvest occurred in nearly all populations that could be assessed for it, and in some cases lasted for several years. “)
Garrison Gibson: books and blog 