Schooled Mature Sockeye/Red Salmon (Oncorhynchus Nerka; Salmonidae) Arriving On Spawning Grounds. In Background: Male Threat Display By Gaping. Taken Under Water In Power Creek, A Tributary Of Eyak Lake And The Copper River Delta Near Cordova And Prince William Sound. Summer, South Central Alaska. Capture Date 19 Sept 2009.Image #: 2427841 See More From: Thomas Kline