Many boats in the Alaska salmon fishery, like this one are rigged to use both troll (line caught) and gill netting equipment
Salmon smolts (recently hatched juveniles heading to sea) were caught below the Dalles Dam as part of a National Marine Fisheries research project to determine the impacts of dams on the Columbia River. The juveniles' blood was tested to see if the rapid descent through the dam had caused potentially fatal nitrogen narcosis commonly known as "the bends", which can cause the fish to suffocate .
In Alaska's remote fishing grounds fishing boats often off-load their catch to itinerant tender vessels that then transport the fish to the processing plants. It is not uncommon that women operate these vessels.
