In this game, students simulate the challenges that salmon face as they move into and out of the estuary.
Estuaries are formed where fresh water from rivers and streams runs off and mixes with saltwater from oceans. Any plant or animal that lives within this environment must be tolerant to a wide variety of conditions such as low and high salt concentrations and hot and cold temperatures.
Most Pacific salmon are born in fresh water, spend their adult lives (1-2 years) in saltwater oceans and then return to their natal rivers (the rivers they were born in) or lakes to spawn.
Many animals rely on salmon passing through the estuary for food. Examples include: river otters, seal, bears, wolves, ravens, gulls, eagles and people.