Native Olympia oysters, Mugu Lagoon. Photo: Tom McCormick.

Oyster restoration structures under water, San Francisco Bay. Photo: Marilyn Latta, California State Coastal Conservancy.

Oyster restoration with seeded cultch, Eld Inlet. Photo: Puget Sound Restoration Fund.

Monitoring oyster restoration, Humboldt Bay. Photo: David Couch.

Native oyster bed, Nootka Sound, British Columbia. Photo: Brian Kingzett.

Researchers monitoring oysters along transect, San Francisco Bay. Photo: Anna Deck.

Spreading juvenile Olympia oysters, Henderson Inlet. Photo: Emmett O’Connell, Northwest Indian Fisheries Commission

Crew with shell bags, Suquamish Tribe, Dyes Inlet. Photo: Puget Sound Restoration Fund.

Olympia oysters settled on Pacific oyster shell in Swinomish Tribe restoration project, Sakgit Bay. Photo: Julie Barber.

Oysters being relocated to Valino Island. Photo: South Slough National Estuarine Research Reserve.

Placing shell bags, Netarts Bay. Photo: The Nature Conservancy.

Oyster restoration as part of a living shorelines project in San Francisco Bay. Photo: California State Coastal Conservancy.

Cultured Olympia oysters on clam shells staked into the mud, Elkhorn Slough. Photo: Elkhorn Slough National Estuarine Research Reserve.

Bahia San Quintin, Baja California, where Olympia oysters have been found in high abundance. Photo: Julio Lorda Solorzano.

Monitoring restoration project in Newport Bay. Photo: Danielle Zacherl.

Tide rises over oysters recruited to restoration project in Newport Bay. Photo: Danielle Zacherl