In addition to ongoing collapse of California sea lions (see here for sources and discussion), Alaska's wolves are suffering a precipitous drop in number:
Alaska's Wolves Face Catastrophe By Taylor Hill, TakePart 09 June 15 http://readersupportednews.org/news-section2/318-66/30638-alaskas-wolves-face-catastrophe
A government study reports that the predators’ population has plummeted 60 percent in one year.
Southeast Alaska’s isolated wolf population has declined by 60 percent in just one year, dropping from an estimated 221 individuals in 2013 to 89 wolves in 2014, according to the U.S. Forest Service.
Those numbers are already outdated. Another 29 wolves were reportedly killed in the 2014–2015 hunting and trapping season.
The figures were reported in a brief written by U.S. Forest Service officials who worked with Alaska’s Department of Fish and Game to update the region’s wolf population estimates.
The final report is expected to be released by the end of the week, but the early summary has prompted conservationists to call for an expedited endangered species listing for the reclusive subspecies....