Kelp Restoration

Bull kelp. Photo Credit: Keith Johnson

The Greater Farallones Kelp Restoration Project is a collaborative effort led by the Greater Farallones Association (GFA) and NOAA’s Greater Farallones and Cordell Bank National Marine Sanctuaries, working with state and federal agencies, academic institutions, nonprofit organizations, tribes, fisheries, and local communities. Together, we aim to restore and protect bull kelp forests along the northern California coastline—habitats that support marine life, sustain fisheries, and drive the coastal economy.

Why Restoration Matters

Bull kelp forests are the underwater rainforests of our coastline, providing food and shelter for fish, invertebrates, seabirds, and marine mammals. Over the last decade, these habitats have declined by over 90% due to a surge in purple urchins, loss of natural predators, and warming ocean conditions. This collapse has caused:

  • An 80% decline in the commercial red urchin fishery (a $3M ex-vessel value)
  • The closure of the recreational red abalone fishery (a $44M non-market value)
  • Long-term losses for fishing families and coastal businesses

Restoring kelp forests will help revitalize local fisheries, support tourism, and rebuild the ocean resources that coastal communities rely on.

A Community-Driven Restoration Plan

To address the crisis, GFA led the creation of the Sonoma-Mendocino Kelp Restoration Plan, a guidance document developed following the recommendations from scientific experts, tribes, diverse stakeholders, and the public through the Greater Farallones NMS Sanctuary Advisory Council. This plan lays out strategies for kelp recovery and guides all project activities.

Our Approach

We’re working to bring kelp forests back by:

  • Reducing urchin overpopulation with help from local commercial divers
  • Outplanting bull kelp to replenish spores and regrow habitat
  • Monitoring ecosystem health through collaborative science
  • Partnering with fisheries and tribes to create jobs and rebuild coastal livelihoods
  • Engaging communities through outreach, youth education, and school programs

Our efforts focus on priority restoration sites—Fort Ross Cove, Timber Cove, Ocean Cove, and Sea Ranch—to create thriving kelp oases that can help repopulate the broader coast and restore fishing opportunities.

Get Involved

We host quarterly Kelp Restoration Network meetings, open to all stakeholders and community members. Join us to learn, share ideas, and collaborate on restoration and conservation of kelp forests.

 Contact:
Rietta Hohman, Program Manager
rhohman@farallones.org | rietta.hohman@noaa.gov

Partners

This project is made possible through a diverse network of partners, including NOAA Office of National Sanctuaries (or NOAA Greater Farallones and Cordell Bank National Marine Sanctuaries), California Department of Fish and Wildlife, academic institutions like Stanford University and UC Davis, the Kashia Band of Pomo Indians, Fort Ross Conservancy, and many others, with funding support from organizations like the Ann and Gordon Getty Foundation.