Small (often microscopic) aquatic animals that are suspended or swimming in water.

Logs, branches, or sticks that fall or hang into rivers. This debris gives salmon places to hide and provides food for insects and plants which salmon feed upon. yolk sac

Any of several ten-armed animals who live in the ocean. Closely related to the octopus. turbine

The act of producing a new generation of salmon. The female digs a redd

Life stage of salmon between the parr and adult stages. At this stage, the young salmon are silver in color and migrate to the sea. smoltification

Any of various ocean or freshwater fishes who have large flattened heads and prominent spines. sea lions

Any of various marine, meat-eating mammals who live mostly in the water but spend some time on land or ice to reproduce or rest. They have torpedo-shaped bodies and paddle-like flippers. shrimp

Substance or substances used to pollute

An animal which feeds on other living animals. redd

Areas next to natural water courses which are full of trees, plants, and other vegetation. These areas help keep the water cool and clean as well as provide important fish and wildlife habitat. semelp [..]