Each year these attract a run of up to half a million chum salmon.
Recent market developments have increased the demand for Chum salmon.
Chum salmon and caribou are the most important food sources.
It is the use of "chum salmon" which will perhaps most surprise shoppers.
Male chum salmon develop a hooked-jaw during the spawning season.
The area is subject to netting for most parts of the year and a large catch, of chum salmon, cannot be guaranteed.
Most Chum salmon spawn in small streams and intertidal zones.
The rivers are home to many schools of fish, including the grayling, arctic char and chum salmon.
More than 50 species of fish live in the river, including dace, chum salmon, ayu, and herring.
Chum salmon is a typical cold water fish that prefer water around 10 degrees Celsius.