Michael Quinton / Steller's Sea Lion (Eumetopias jubatus) with Pink Salmon (Oncorhynchus gorbuscha) prey, Alaska

Matthias Breiter / Grizzly Bear (Ursus arctos horribilis) with Pink Salmon (Oncorhynchus gorbuscha) prey, Anan Creek, Tongass National Forest, Alaska

Matthias Breiter / Black Bear (Ursus americanus) with Pink Salmon (Oncorhynchus gorbuscha) prey, Anan Creek, Tongass National Forest, Alaska

Matthias Breiter / Black Bear (Ursus americanus) with Pink Salmon (Oncorhynchus gorbuscha) prey, Anan Creek, Tongass National Forest, Alaska

Charlie Summers / Black Bear (Ursus americanus) with Pink Salmon (Oncorhynchus gorbuscha) catch, Anan Creek, Alaska, July.

Chris & Monique Fallows / Pink Salmon (Oncorhynchus gorbuscha) migrating in small shallow river, Prince William Sound, Alaska, USA.

Alex Mustard,Alex Mustard / A female (in front) and male Sockeye salmon (Oncorhynchus nerka) over eggs in their spawning river. Adams River, British Columbia, Canada, October.

Sergey Gorshkov / Salmon (Salmonidae) eggs falling to lake bottom, Lake Kuril, Kamchatka, Far East Russia, July

Laurie Campbell / Male Atlantic salmon {Salmo salar} leaping, migrating upstream to spawn, Perthshire, Scotland, UK, October

Juergen Freund / Pink salmon in hatchery pool (Oncorhynchus gorbuscha) Canada

Juergen Freund / Volunteer mixing eggs and sperm of pink salmon. Canada (Oncorhynchus gorbuscha)

Juergen Freund / Volunteers mixing eggs and sperm from salmon in hatchery, Canada