August 19, 2026 — A team in Phippsburg has been working for nearly a decade to get wild oysters to regenerate in Maine’s cold, turbulent waters.
On a sticky August morning in Phippsburg, Cait Cleaver, an assistant professor of environmental studies at Colby College, crouched along a section of rocky shoreline that framed a circular expanse of deep green seawater. She gently brushed aside strands of thick seaweed to reveal a large oyster nestled between two boulders.
“We’ve got 50 percent algae cover, acorn barnacles, and 100 percent rock,” Cleaver reported to her summer intern. “And we’ve got one live 55-millimeter American oyster!”
Less than three inches long, the oyster didn’t look like much. But it was evidence of something Cleaver and her team had been looking for for years: a wild oyster that had successfully grown from free-floating larva and survived the winter.
For the past seven years, Cleaver has helped run The Basin Oyster Project, a collaboration initially started by The Nature Conservancy. The project’s long-term goal is to restore wild oysters up and down the Maine coast. More immediately, that means getting oysters to survive and spawn on their own in the Basin, a deep, protected saltwater inlet on the New Meadows River, creating a self-sustaining reef.
Wild oysters were once prevalent along the coast of Maine, but had largely disappeared by the early 1900s, victims of overharvesting by European settlers, pollution and rising sea levels, which brought in cold water and predators. The state has been trying to re-establish oyster populations in Maine since the late 1940s, but they have struggled to take hold at scale.