OASeS is a partnership of 18 entities, including federal and state agencies, tribes, non-governmental organizations, and academic institutions as well as two community-at-large representatives. There are two co-chairs who provide oversight and guidance on OASeS activities.

• Hoh Tribe
• Makah Tribe
• Quileute Tribe
• Quinault Indian Nation
• Olympic Coast National Marine Sanctuary
• Olympic National Park
• Washington Sea Grant
• Washington Ocean Acidification Center, University of Washington
• Washington Department of Ecology
• Washington Department of Fish and Wildlife
• Washington Department of Natural Resources
• Washington Governor’s Office
• NOAA's Pacific Marine Environmental Laboratory
• NOAA's Ocean Acidification Program
• NOAA's Northwest Fisheries Science Center
• Surfrider Foundation
• OCNMS Foundation or Sanctuary Advisory Council Chair
• Northwest Indian Fisheries Commission
• 2 Community-at-large Representatives

We would also like to thank and recognize the National Marine Sanctuary Foundation, the Northwest Association of Networked Ocean Observing Systems (NANOOS), and the Washington Ocean Acidification Center for their support for the development of this website and associated content.