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Browse Salish Sea Currents magazine stories

A new report from the Puget Sound Institute and the University of Washington School of Aquatic and Fishery Sciences examines a species-level approach to oxygen risks in Puget Sound. Case studies of Dungeness crabs, English sole, and Chinook salmon provide new details on when and where individual species may be most vulnerable. Funding for this article is provided in part by King County.
The news of two new southern resident orca calves this year marks the 50th anniversary of whale counts from the Center for Whale Research.
Killer whales are active both day and night, but most scientific research focuses on their daytime activities. A recent study looked at a small group of endangered southern residents to find out how often they hunt after the sun goes down. Ocean noise tends to decrease at night, potentially making it easier for the whales to catch salmon, but could they take advantage?
A chemical found in tires is leading to the deaths of untold numbers of coho salmon in Puget Sound every year. Chemical companies are searching for an alternative but say the unique chemistry and function of 6PPD are major challenges. This article is part one of a three-part series.
Formal legal processes are underway in Washington and California to seek alternatives to the highly toxic chemical in tires. We continue with part two of our three-part series on efforts to find a replacement for 6PPD.

With a worldwide market valuation somewhere around $1 billion a year for the single chemical 6PPD, tire companies and their chemical suppliers are working overtime to find a safe and effective replacement for the tire additive. The financial stakes are enormous, since virtually every tire on the market today contains 6PPD.

The past, present and future of natural conditions in the United States are described in a new report, which has traveled a bumpy road to its current draft form, now out for public review and comment.

“The Nature Record,” originally titled the “National Nature Assessment,” was launched in 2022 as a government project — the first of its kind. The effort involved more than 160 leading scientists from throughout the country, representing wide-ranging fields of study related to the natural environment.

The Washington State Department of Ecology is responding to new legal rulings and public concerns with changes in planning and potentially future enforcement. We continue our occasional series on water quality and wastewater management in Puget Sound. Funding for the series is provided in part by King County.
Increasing concerns surround PFAS in products from wastewater treatment plants. How great a risk do they pose, and are there feasible approaches to removing them? We continue our occasional series on water quality and wastewater management in Puget Sound. Funding for the series is provided in part by King County.
Untold numbers of hatchery fish may be dying from exposure to tire-contaminated runoff, according to a new study.