Salish Sea

The Salish Sea extends across the U.S.-Canada border, and includes the combined waters of the Strait of Georgia, the Strait of Juan de Fuca, Puget Sound Basin and the San Juan Islands.

Water Resource Inventory Areas (WRIA). Map: Kris Symer. Data source: WAECY.

OVERVIEW

Geographic boundaries of Puget Sound and the Salish Sea

The boundaries of Puget Sound and the Salish Sea are not always consistently defined by scientists and government agencies. This article clarifies the distinctions between oceanographic and watershed-based definitions of these geographic areas. 

RELATED ARTICLES

Spring Chinook Salmon. Photo: Michael Humling, US Fish & Wildlife Service
6/25/2018

Opening the black box: What’s killing Puget Sound’s salmon and steelhead?

An intensive research program in the U.S. and Canada is studying why so few salmon in the Salish Sea are returning home to spawn. They are uncovering a complex web of problems involving predators, prey and other factors that put salmon at risk as they migrate to the ocean. We begin a four-part series on the Salish Sea Marine Survival Project, including new findings presented at the 2018 Salish Sea Ecosystem Conference last spring in Seattle. 

Photo by Brandon Cole. All rights reserved. Courtesy of Explore the Salish Sea: A Nature Guide for Kids.
6/8/2018

New book helps kids discover the Salish Sea

Kids around the region are learning about the Salish Sea thanks to a new book that is being offered — in many cases free of cost — to Washington schools and libraries. Explore the Salish Sea by Joe Gaydos and Audrey Benedict inspires the next generation to appreciate and perhaps someday protect the environment close at hand. 

The shared marine waters of British Columbia and Washington report cover
7/28/2015

The shared marine waters of British Columbia and Washington

A scientific assessment of current status and future trends in resource abundance and environmental quality in the Strait of Juan de Fuca, Strait of Georgia, and Puget Sound 

Book cover for The Salish Sea: Jewel of the Pacific Northwest
4/20/2015

New book focuses on the natural history of the Salish Sea

The Salish Sea: Jewel of the Pacific Northwest brings together more than 230 extraordinary images of the Salish Sea. But don't call it a coffee table book. Its lush photos are backed by a serious scientific perspective on this complex and fragile ecosystem.

Screenshot of 2013 Health of the Salish Sea Ecosystem Report
7/19/2013

Report: 2013 Health of the Salish Sea Ecosystem Report

The 2013 Health of the Salish Sea Ecosystem Report was prepared jointly by the U.S. Environmental Protection Agency and Environment Canada. View the complete report, or read the Executive Summary below.