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The pattern of colder and fresher Puget Sound water persists. Jellyfish aggregations continue to persist in Budd Inlet. Debris lines are numerous and long. There are multiple oil sheens in Seattle waterways. CDOM (colored dissolved organic matter) sensor and en route ferry thermosalinograph provide an important tracer for freshwater entering Puget Sound from Whidbey Basin.

The report comes after a third year of La Nina conditions. Weak upwelling off the coast and low river flows of major rivers meant less cold, nutrient-rich, upwelled water was being entrained into Puget Sound in late summer and fall. Water conditions in Puget Sound in October were generally expected while Willapa Bay and Grays Harbor were both unusually warm and salty. Smoky air restricted our flight to Southern Puget and Central Sound where we saw blooms in terminal bays as well as patches of jellyfish. Sediment in Commencement Bay and along shorelines in Totten Inlet was unusual for a dry fall. A healthy foodweb has at its base a balance of nutrients. Explore what we found over the period of two decades of monitoring.

The removal of shoreline armoring has become a priority for the state's Puget Sound recovery efforts. The Puget Sound Ecosystem Monitoring Program (PSEMP) is providing details on the effectiveness of armor-removal projects at 49 study sites.

Learn more about demographics in Kitsap County, Washington.  The U.S. Census Bureau published the following quick facts.

A virus is the likely cause of sea-star die-offs on the Northeast Pacific Coast and in Puget Sound, according to a November 2014 paper published in the Proceedings of the National Academy of Sciences.

This is an extended abstract of Poisoning the body to nourish the soul: Prioritising health risks and impacts in a Native American community by Jamie L. Donatuto, Terre A. Satterfield and Robin Gregory. The full article was published in Health, Risk & Society, Vol. 13, No. 2, April 2011, 103–127. The extended abstract was prepared for the Encyclopedia of Puget Sound by Jamie L. Donatuto. 

Learn more about demographics in Thurston County, Washington.  The U.S. Census Bureau published the following quick facts.

Learn more about demographics in Pierce County, Washington.  The U.S. Census Bureau published the following quick facts.

Despite warmer air temperatures, normal snowpack in the mountains suggest that summer freshwater flows into Puget Sound might be higher than last year. As of April, the spring plankton bloom has extended across Central and South Puget Sound. Ferry data shows chlorophyll increasing after March 25 and expanding across the area. With water temperatures above normal as a carry-over from 2015, jellyfish patches are numerous in inlets of South Sound and in Sinclair Inlet, unusual for this time of year. Check out the tiny burrowing ostracods as well as our Washington Conservation Corps Intern analyzing seawater oxygen.

The amount of oxygen in the Salish Sea is dependent on water circulation which distributes chemical elements such as nitrogen through the system.