California Ocean Acidification Action Plan

The State of California Ocean Acidification Action Plan is now available!

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Continuing California’s bold leadership on climate change, the State of California Ocean Acidification Action Plan articulates a 10-year vision for addressing ocean acidification and a series of pragmatic actions to work towards that vision. It is designed for integration into public agency operations and to inform decisions made by members of the private sector and scientific community. In so doing, it may serve as a model for other jurisdictions seeking to undertake concrete actions to better understand, mitigate, and adapt to ocean acidification.

The draft is being considered for potential adoption at the October 25, 2018 OPC public meeting in Santa Cruz, CA. See the agenda here.


This State of California Ocean Acidification Action Plan (Action Plan) was produced by the California Ocean Protection Council in cooperation with the California Ocean Science Trust. This policy and management plan is one of the first of its kind, and was developed within the framework of the International Alliance to Combat Ocean Acidification (OA Alliance), a global partnership founded in 2016 to assist governments in taking meaningful action to anticipate, mitigate, and adapt to the significant changes to the chemistry of the world’s oceans that are now occurring as a result of carbon dioxide (CO2) emissions.

Development of the Action Plan involved broad consultation with policy-makers, managers, experts, and interested parties across California and the OA Alliance and utilized key resources (such as the OA Alliance’s OA Action Plan Toolkit) (see Appendix 2 of the Action Plan). The recently established Ocean Acidification and Hypoxia Science Task Force, convened per Assembly Bill 2139, provided scientific and technical input and reviewed the draft plan for scientific feasibility. The plan also underwent a 30-day public comment period. Final adoption of the Action Plan is anticipated at the Ocean Protection Council October 25, 2018 meeting.

Action Plan Timeline

August 1 – August 31, 2018: 30-day public comment period on draft Action Plan

August 21, 10:00 AM – 11:00 AM (PST): Public informational webinar. View the archived recording here.

September 12-14, 2018: Governor’s Global Climate Action Summit: Draft Action Plan highlights announced, San Francisco, CA

October 25, 2018: OPC Public Meeting: Consideration for adoption of the Action Plan, Santa Cruz, CA (webcast)

December 3-14, 2018: United Nations Climate Change Conference: Share Action Plan, Katowice, Poland

Project Team

Ocean Protection Council

Jenn Phillips, Climate Change Policy Adviser
Whitney Berry, Ocean Protection Council

Ocean Science Trust

Hayley Carter, Ocean Science Trust
Liz Whiteman, Ocean Science Trust

Sustainability Science and Policy

Liz Chornesky, Consulting Analyst and Lead Author


California’s Action Plan Overview
California’s Ocean Acidification and Hypoxia Science Task Force
International Alliance to Combat Ocean Acidification
OA Alliance’s Action Plan Toolkit


Jenn Phillips,, Ocean Protection Council