Saving Seafood

Climate change may halve omega‑3 fatty acids in fish and the organisms they eat

August 31, 2026 — You’ve probably heard eating fish and other seafood is good for your health. One of the main reasons is that seafood is an excellent source of two important omega-3 fats called EPA and DHA.

EPA and DHA are critical for the development and function of brains, eyes and healthy hearts. They also reduce chronic inflammation, which is linked to many chronic diseases. They can also reduce the risk of premature births and perhaps even some types of cancer.

While humans can produce EPA and DHA from ALA (an omega-3 fat found in plants) and it’s possible to get them from foods such as linseed and walnuts, seafood is the main source for most people.

However, our new study shows many fish and other seafood will become less rich in omega-3s over time, due to rising ocean temperatures as the climate changes. In fact, we found omega-3 could drop by 50% under very high warming scenarios.

This is very bad news for human health but also for the health of other animals in the food web.

Read the full article at The Conversation 

A River Reborn: Restoring a Stronghold for Hood Canal Summer-Run Chum Salmon

August 28, 2026 — Threatened Hood Canal summer-run chum salmon represent a bright spot in Pacific salmon recovery. According to preliminary data from the Hood Canal Coordinating Council, average annual returns have nearly tripled since 2022. They’ve climbed from about 11,600 fish per year between 2018 and 2021 to roughly 32,600 between 2022 and 2025. That’s up from a low of less than 1,000 spawners in the early 1990s.

Scientists say several years of favorable ocean conditions have contributed to the recent rebound. Cooler ocean temperatures increase the food available to salmon and improve their survival at sea. But those conditions won’t last forever. Experts believe restoring river habitat will help summer chum remain resilient when the Pacific Ocean inevitably shifts back to a warmer phase in its natural cycle.

One of the healthiest summer chum populations is returning to one of the region’s most degraded rivers. The number of chum spawning in the Big and Little Quilcene rivers has quadrupled in the last 4 years. This despite 2 miles of the Big Quilcene being straightened, scoured of spawning gravel, and cut off from its floodplain.

NOAA Fisheries’ Office of Habitat Conservation, the Hood Canal Salmon Enhancement Group, and the Jamestown S’Klallam Tribe are restoring salmon habitat at two locations on the Big Quilcene River–Moon Valley and the Lower One Mile. The projects will:

  • Create spawning and rearing habitat for Hood Canal Summer chum and threatened Puget Sound Chinook salmon and steelhead
  • Improve the Quilcene Bay estuary, where juvenile salmon make their first transition to salt water
  • Stop the flooding that has plagued the town of Quilcene for generations

The restoration should finish by September, just as the summer chum return to spawn.

“Restoring the Big Quilcene River has taken tribes, nonprofit organizations, local communities, state and federal agencies, and NOAA all working toward the same goal,” said NOAA Marine Habitat Resource Specialist Chemine Jackels. “Together, we’re giving one of Hood Canal’s most important summer chum populations a healthier river and a better chance to thrive for generations to come.”

Read the full article at NOAA Fisheries

Earth is simmering in its hottest water temps on record, and that’s bad for fish and us

August 25, 2026 — The world’s oceans simmered to their hottest temperatures on record over the weekend and are likely to warm even further in the next few months, putting stress on life in the water and on land too, the European climate service Copernicus announced Monday.

Spurred by a still growing but already supersized natural El Nino and human-caused climate change, the world’s ocean temperatures hit 21.1 degrees Celsius (70 degrees Fahrenheit) on Friday and Saturday, narrowly edging out the average daily record set in March 2024, said Samantha Burgess, strategic climate lead for Copernicus.

“This is yet another sign of our climate system under strain and the ocean under immense pressure,” Burgess said.

Jane Lubchenco, an oceanographer and former chief of the U.S. National Oceanic and Atmospheric Administration called the record “very troubling.”

“An ocean this warm destabilizes weather patterns and threatens food security, economic prosperity and marine life,” Lubchenco said in an email. “A warmer ocean is not our friend.”

Read the full article at Associated Press