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The Orange Sea Pen -

The dumbbell worm -


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A young resident killer whale chases a chinook salmon in the Salish Sea near San Juan Island, WA. Sept 2017. Photo: (CC BY-SA 2.0) https://flic.kr/p/21wV8rV

Increased consumption of Chinook salmon by seals and sea lions in the Salish Sea “could be masking the success of coastwide salmon recovery efforts,” according to a new study published this week in the journal Scientific Reports. Endangered resident orcas are said to be declining in part due to a lack of available Chinook, the orcas' preferred prey.


2017 State of the Sound report cover

The 2017 State of the Sound is the Puget Sound Partnership’s fifth biennial report to the Legislature on progress toward the recovery of Puget Sound by 2020. The document reports on both the status of the Partnership's recovery efforts and the status of a suite of ecosystem indicators.


The Vechey residence and bulkead (circa 2013) before the restoration project. Photo courtesy: John Vechey

Climate change could cause sea levels to rise more than four feet in some parts of Puget Sound, leaving shoreline residents with some tough decisions. Experts say fighting the waves with conventional seawalls may not be the answer.


Olympia high tide, Dec 28, 2010. Photo: Johanna Ofner (CC BY-NC-SA 2.0) https://www.flickr.com/photos/sweetetc9/5301201482

The average worldwide sea level has increased more over the past 150 years than during the previous 1,500 years, experts say, and the seas continue to rise at an ever-increasing pace.


GIS is used to illustrate sea-level rise scenarios in downtown Olympia. Story map by City of Olympia: https://arcg.is/LSyOO

Planning for rising seawater in Puget Sound has often focused on public property such as roads, buildings and utilities. Now local governments are looking more closely at private property despite regulations based on traditional flooding history.


A plane releases chemical dispersant to break up an oil slick on the water surface below. Photo courtesy of the National Commission on the Deepwater Horizon Oil Spill and Offshore Drilling.

A 2017 report from the University of Washington summarizes current scientific knowledge on chemical oil spill dispersants and their potential impacts on shoreline habitats in San Juan County, Washington. 


Ptilosarcus gurneyi (with a striped  nudibranch) off Whidbey Island, WA;  photo by Jan Kocian.

The Orange Sea Pen, also called the Fleshy Sea Pen or Gurney’s Sea Pen, resembles a colorful autumn tree waving in the “breeze” of moving water currents. Article courtesy of the Washington Department of Ecology's Eyes Under Puget Sound series. 


Image of tidal motion in SSM (72 hr animation, April 06); Exaggerated vertical scale to visualize SSM domain-wide tidal motion

The Salish Sea Model is used to predict spatial and temporal patterns in the Salish Sea related to factors such as phytoplankton, nutrients and Dissolved Oxygen. It is a collaborative effort between the Pacific Northwest National Lab, the Washington State Department of Ecology and U.S. Environmental Protection Agency.


Fragile shell. Joe Doe (CC BY-NC-ND 2.0) https://www.flickr.com/photos/47104521@N08/4590994484/

Scientists from NOAA's Northwest Fisheries Science Center (NWFSC) developed publicly searchable database of nearly 3,000 Puget Sound species to study whether species having calcium carbonate shells are more or less vulnerable to ocean acidification. Their findings published in the journal Elementa question previous assumptions that shell-building organisms are more vulnerable.


Report cover

Formaldehyde is often used to control parasites on hatchery salmon and trout. The U.S. Environmental Protection Agency and the Washington State Department of Ecology conducted a joint study of formaldehyde concentrations in effluent from hatcheries in the Pacific Northwest. 


English Sole (Parophrys vetulus) in Puget Sound. Photo: biodiversityguy https://biodiversityguy.smugmug.com/Underwater/Reference-List-Photos-of/i-3GgD5hB/A

A new study shows a surprising decline in some toxic chemicals in Puget Sound fish, while levels of PCBs increased in some cases. Scientists say the study shows that banning toxic chemicals can work, but old contaminants remain a challenge as they continue to wash into Puget Sound.


WDFW biologists sorting and measuring fish from PSEMP's index sites in the Duwamish River and near the Seattle Waterfront. Photo: WDFW

Toxic chemicals have been showing up in Puget Sound fish for more than a century, but consistent testing over the past 30 years has helped to reveal some unusual patterns of pollution.


Screenshot of archived SSEC 2016 website at http://www.wwu.edu/salishseaconference/archived/2016/

The 2016 Salish Sea Ecosystem Conference took place April 13-15 at the Westin Bayshore in Vancouver BC. Over 1100 scientists and policy experts attended.


Dean Toba, a scientific technician with the Washington Department of Fish and Wildlife, operates the agency’s screw trap on the Skagit River. The trap helps biologists estimate the number of juvenile salmon leaving the river each year. Photo: Christopher Dunagan, PSI

In recent decades, hundreds of millions of dollars have been spent to restore habitat for Puget Sound salmon. In this article, we look at how scientists are gauging their progress. Are environmental conditions improving or getting worse? The answer may depend on where you look and who you ask.


Salmon smolts. Photo courtesy of Governor's Salmon Recovery Office

A biennial report produced by the Governor's Salmon Recovery Office provides stories and data about salmon, habitat, and salmon recovery in Washington, including Puget Sound.


Spiny Dogfish (Squalus acanthias), a species typically found in Puget Sound marine waters. Image courtesy of NOAA.

The marine habitat of Puget Sound can be divided up into nearshore, benthic (associated with the sea floor), and pelagic (open water) habitats. This article focuses on the pelagic habitat within the Puget Sound. This article was prepared as part of the 2015 Puget Sound Fact Book produced by the University of Washington Puget Sound Institute. 


Dead salmon. Photo: Boris Mann (CC BY-NC 2.0) https://www.flickr.com/photos/boris/3037705761

Detritus, or dying or decaying matter, is a central component of the nearshore food web in Puget Sound. This article was prepared as part of the 2015 Puget Sound Fact Book produced by the University of Washington Puget Sound Institute. 


Anna Smith Park, Bremerton WA – May 2017

The Kitsap Regional Shoreline Restoration Program is an effort to protect and restore the Puget Sound nearshore by supporting willing landowners who wish to remove bulkheads on their shorelines. The Kitsap Regional Shoreline Restoration Program was funded by Environmental Protection Agency’s (EPA) Puget Sound Watershed Assistance Program, Grant #PO-00J08501-0.


Eelgrass Data Viewer
An interactive map created by the Washington Department of Natural Resources provides access to eelgrass monitoring data collected between 2000 and 2015 at selected sites in Puget Sound. 

Eelgrass at Alki Beach, Seattle. Report cover photo: Lisa Ferrier

Scientists want to know why eelgrass is on the decline in some areas of Puget Sound and not others. The answer will affect future strategies for protecting one of the ecosystem’s most critical saltwater plants.


The Qwuloolt estuary hydrology restored by breaching a century old levee. WRP easement land in the foreground. Photo: USDA

When rivers spill into Puget Sound, they provide some of the most productive habitat in the ecosystem. The ebb and flow of the tides creates a perfect mix of fresh and salt water critical for young salmon. But over the past 100 years, the region’s tidal wetlands have declined by more than 75%. Now a coalition of state and federal agencies has a plan to bring them back.


The University of Washington Tacoma has spurred sustainable urban development including re-purposing of historic buildings, new housing, a museum and retail district, multi-use trails, and light rail transit. Photo courtesy: UW Tacoma

The state of Washington estimates that the Puget Sound area will grow by more than 1.5 million residents within the next two decades. That is expected to have profound effects on the environment as more and more people move to undeveloped areas. The race is on to protect this critical rural habitat, but planners say what happens in the cities may be just as important.


Report cover

A 2017 report from the Puget Sound Ecosystem Monitoring Program presents an overview of selected recent monitoring and research activities focused on toxic contaminants in the Salish Sea. 


PSEMP logo

The Puget Sound Ecosystem Monitoring Program (PSEMP) is an independent program established by state and federal statute to monitor environmental conditions in Puget Sound. 


Noise from ocean-going ships can harm marine life. Photo courtesy of NOAA.

A 2017 article in the online journal Authorea reports that a comparatively small portion of ships produce much of the ocean's underwater noise.