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March 20, 2023

Inbreeding hinders population recovery among endangered Southern Resident killer whales

While a scarcity of Chinook salmon and other environmental factors may be pushing the Southern Resident killer whales toward extinction, a new genetics study has revealed that inbreeding has been exerting a powerful, overriding influence upon the small, genetically isolated population. The weakened genetic condition of the Southern Resident orcas, which frequent Puget Sound, could […]

February 21, 2023

The U.S. Capitol building

PUGET SOS brings new funding and a federal makeover

Recently passed federal legislation has increased funding to protect Puget Sound while also changing the way ecosystem recovery efforts are organized. The legislation includes key provisions of the PUGET SOS Act and establishes a national office for Puget Sound recovery based at the Environmental Protection Agency in Seattle. The end of 2022 marked a seismic […]


February 14, 2023

An aerial image of the lower Duwamish River as it flows into Puget Sound. The river is heavily contaminated with PCBs and other toxic chemicals. Photo courtesy of NOAA.

Symposium grapples with long-lasting PCBs

Researchers at the Puget Sound Institute hosted a two-day symposium last month to share information about the science and management of PCBs in the environment. The online workshops, held January 24th and 25th, were organized by PSI researchers Andy James, Joel Baker, and Marielle Larson, in coordination with colleagues Will Hobbs (Washington State Department of […]


January 3, 2023

Remembering Ken Balcomb and his extraordinary life with killer whales

I’m still adjusting to the world of killer whales without Ken Balcomb. Ken, who died Dec. 15 at age 82, was a constant presence throughout my career as an environmental reporter. His presence inspired many others among the so-called “killer whale community,” made of experts, observers and those who simply love and follow the stories […]

December 20, 2022

The quest continues for a nutrient reduction plan

The quest continues for a large-scale plan to reduce human sources of nitrogen and improve the health of Puget Sound. This article is part of the Puget Sound Institute’s effort to explore the technical uncertainties related to the science of Puget Sound water quality. The project, jointly funded by King County and PSI, includes online […]

December 14, 2022

Tacoma Narrows Bridge viewed from Gig Harbor side https://www.flickr.com/photos/tomcollinsphoto/47070840014/in/photostream/

A network of computer models is predicting the future of Puget Sound

A new $4.8 million dollar project led by the Puget Sound Institute links together a series of computer models to explore future scenarios across the watershed. Some of Puget Sound’s biggest concerns hold the greatest uncertainties.  Will we have clean water? Can the ecosystem sustain species like endangered salmon? How can the region continue to […]

December 10, 2022

As winter approaches, salmon and orcas are still a commanding presence

With salmon and orcas still on the move and facing ever-changing weather conditions, I thought it might be time for a brief update to my blog post of Nov. 21. At the time of the last report, the Puget Sound region had gone through a 13-day dry spell, which followed a period of brief and […]

November 21, 2022

Low rainfall leads to an odd and changing year for salmon, killer whales and people

It has been an interesting year for observing the behavior of Southern Resident killer whales, chum salmon and humans in the Puget Sound region. Weather played a significant role. Two weeks ago, all three pods of endangered orcas spent four days together in Puget Sound, something we have not seen in years. Chum salmon, which […]

November 4, 2022

Lawsuit seeks to block Southeast Alaska troll fishing to increase salmon for orcas

How much should Alaskan fishing be curtailed to provide more food for the endangered Southern Resident killer whales? It is an important question, enmeshed in conflicting federal priorities and provoked by a lawsuit brought by Wild Fish Conservancy, a Seattle-based conservation group. A federal court ruled in August that the National Marine Fisheries Service had […]

October 14, 2022

Scientists dig into massive data collected during international high-seas expedition

Questions about where salmon go and how they survive when traveling far out into the Pacific Ocean have puzzled scientists for 200 years. But a new vision for piecing together this intricate puzzle has begun to emerge, thanks to sophisticated research tools deployed during an international expedition this past winter. Last week, scientists got together […]