Bear predation on salmon can be high in many Alaskan rivers.  Brown bears Ursus arctos and Chum Salmon Oncorhynchus keta are managed concurrently in McNeil River State Game Sanctuary by Alaska Dept. of Fish and Game to benefit the salmon, bears, commercial fishers, and provide unparalleled close-up bear viewing and photography opportunities for the public.
Mark Wipfli, Alaska Cooperative Fish and Wildlife Research Unit. Public domain.
<a rel="nofollow" class="external text" href="https://www.usgs.gov/products/multimedia-gallery/images">United States Geological Survey</a>