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Shellfish Research and Information
Services for the U.S. West Coast

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Ecosystem Services

On the Farm

Improve Water Quality

Ecosystem Services Photo

Learn more about how shellfish can improve water quality and provide important habitat for other marine organisms.

On the Farm Photo

What does it take to be a shellfish farmer? Watch this video on the ins and outs of growing and harvesting shellfish in Puget Sound. Watch Video.

Improve Water Quality Photo

Learn 5 simple steps you can take to improve water quality in your area. Learn more...

Project Highlights


Regional Eelgrass/Shellfish Consortia

In collaboration with shellfish farms along the west coast, we will assess the interaction of eelgrass with various oyster culture systems, and the ecological functions of these habitats for managed fish and invertebrate species.

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Pacific Oyster Mortality

Pacific Oyster Mortality

Significant summer mortality events have occurred with increasing frequency and severity over the past sixty years. These events affect both triploid and dipoloid oysters often during the second year of growout when they near market size.

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Rock Scallop Biotoxin Monitoring

Our team will assess rock scallop uptake, tissue concentration and detoxification rates of naturally occuring toxins that can cause Paralytic Shellfish Poisoning (PSP) in humans, an essential step in the process toward certification.

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Sea Cucumber

Growing Native Sea Cucumbers

PSI and partners are developing polyculture methods for the native, giant red sea cucumber, Parastichopus californicus as a nutrient recycler and promising species for U.S. export.

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Tracking Shellfish Production

Tracking Shellfish Production

U.S. west coast shellfish production accounts for two-thirds of all bivalve aquaculture sales and exceeds $128 million a year, with Washington accounting for 85% of the commercial product..

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Contact Us

Visit our contact page for general inquiries, location information, and for individual staff email.


Now available to check out from the Olympia, Lacey and Tumwater Timberland Libraries!

Click here to learn more about these lendable kits.


Take Action with PSI's SSS Sticker Program!

Sound Science Stewards

Click here to learn how you can earn your Ocopus Genius sticker!


Middle School Science Curriculum: Tiny Crabs, Big Impacts

Light Trap Monitoring

Follow our team of biologists as they search for baby Dungeness crabs in South Sound! Learn more here...