Background Articles

The shrinking of chinook, sockeye, coho and chum salmon has a negative impact on the number of eggs fish lay, but smaller body sizes also mean fewer meals, fewer commercial fishing dollars and fewer nutrients transported into rivers every year.

The size of salmon returning to rivers in Alaska has declined dramatically over the past 60 years because they are spending fewer years at sea, according to a new study led by researchers at the University of California, Santa Cruz, and the University of Alaska Fairbanks.

This year is shaping up to be the worst for sockeye salmon in the Fraser River since tracking began in 1893, according to the Pacific Salmon Commission.

Scientists have said the algae is spreading faster than anything they have seen in the remote Northwestern Hawaiian Islands.

Wild salmon have higher rates of the parasites when ocean fish farms are near, research shows

A group advocating for the conservation of wild Atlantic salmon says the number of adult salmon returning to North America rivers fell to near historic lows last year.

Scientists thought it was dead. But it’s heating water faster than the global average.

Feather, fur or fin, all creatures contend with viruses.

Even those athletes of our rivers, Atlantic salmon, usually aren’t as healthy as they look.

A study of tissue samples taken from 150 Atlantic salmon found 14 separate infectious

Changes are coming to the Arctic so fast that scientists haven't even had a chance to understand what's there

Anglers will be banned from taking their catch home on more than 100 rivers in Scotland this year - as wild salmon stocks reach 'crisis point'.

New research shows the marine heat wave that spread from California to Alaska starting in 2014 caused common murres to starve to death.

Atlantic salmon laid a record number of eggs in a Maine river last year, according to a conservation group that tracks the animal's status in the wild.

Numbers from Fishing Branch, a tributary of the Porcupine River, fell below management and treaty goals, experts from Alaska and the Yukon said at the Yukon River Panel’s meeting in Whitehorse earlier this month.

BRUNY ISLAND, TASMANIA (WASHINGTON POST) - Even before the ocean caught fever and reached temperatures no one had ever seen, Australia's ancient giant kelp was cooked.. Read more at straitstimes.com.

In first-of-its-kind research, NOAA scientists and academic partners used 100 years of microscopic shells to show that the coastal waters off California are acidifying twice as fast as the global ocean average—with the seafood supply in the crosshairs.

The Arctic Salmon Project collected 2,400 samples from the western Arctic this year — more than the past 20 years combined.

As nearly every commercial salmon fisherman in Upper Cook Inlet can tell you, the 2019 season fell far short in every department.

Arctic cod are a cornerstone of the Arctic food chain as a staple food of seals and beluga whales, upon which subsistence food gatherers rely in the region’s coastal communities.

NOAA Fisheries' summer trawl survey shows Norton Sound red king crab are moving, Arctic cod numbers have dropped significantly, and Pacific cod are continuing to increase as the Northern Bering Sea ecosystem undergoes drastic change.

The fast-warming Sea of Okhotsk, wedged between Russia and Japan, is a cautionary tale of the far-reaching consequences when climate dominoes begin to fall.