NOAA Fisheries lists orcas as endangered, and part of what's hurting them is the decline of Chinook salmon. So, when the whales go somewhere new, it can be a sign they're adjusting to shifts in salmon ...

Pinks, the smallest Pacific salmon species, are booming. That's spelled trouble for other fish species struggling for ...

By studying salmon bones, scientists have uncovered that for thousands of years, Chinook salmon returned to California rivers at a range of ages. Today, habitat loss, overharvesting and conventional ...

In the Klamath Tribes’ treaty territory, tribal councilors are working to protect a rare blue-green algae known as Mare’s ...