In the summer of 1579, Francis Drake sailed into a bay on the northern California coast during his circumnavigation of the globe. He claimed the land for Queen Elizabeth I and called it Nova Albion -- New England, in Latin. The precise location of his landing has been debated for centuries, but Drakes Estero and the adjacent Drakes Bay have been the leading candidates since the nineteenth century. A National Historic Landmark designation recognizes the estero as the probable site. Historical markers stand on Drakes Beach near the Kenneth C. Patrick Visitor Center, and monuments mark the Drake's Cove landing site. Whether or not Drake actually set foot here, the landscape he would have seen -- windswept bluffs, sheltered tidal flats, and the wide arc of Drakes Bay -- has changed remarkably little.

The estero drains the entire Point Reyes peninsula. At high tide, saltwater pushes deep into its branching bays, flooding eelgrass meadows that harbor bat rays, leopard sharks, and hundreds of species of invertebrates. At low tide, the mud flats emerge, and shorebirds work the exposed banks in the thousands. Harbor seals haul out on sandbars by the hundreds during pupping season, one of the largest colonies on the California coast. The waters of the estero empty into Drakes Bay through a narrow gap between Drakes Beach and Limantour Spit, a fragile sand barrier that shifts with every winter storm. The whole system is dynamic, constantly reshaped by tides, wind, and sediment -- a landscape that refuses to hold still.

For decades, commercial oyster farming operated inside the estero, a legacy of agricultural uses that predated the national seashore's creation. Drakes Bay Oyster Company grew Pacific oysters on racks submerged in the tidal waters, supplying restaurants across the Bay Area. But the estero had been designated a "potential wilderness area" by Congress, and conservationists argued that aquaculture had no place in it. Oceanographer Sylvia Earle and conservationist L. Martin Griffin Jr. called for an end to oyster farming. Senator Dianne Feinstein pushed back, alleging the National Park Service had relied on flawed science. The fight reached the Secretary of the Interior's desk. On November 29, 2012, Ken Salazar directed the Park Service to let the oyster permit expire. Kevin Lunny, the oyster company's owner, sued. The Ninth Circuit Court of Appeals heard the case, issued a temporary injunction, then declined to rehear it in January 2014. The final legal challenge was dropped in December 2014, and the oyster operation was fully removed by May 2017.

With the oyster racks gone, the estero entered a new chapter. The National Park Service began monitoring the recovery -- tracking eelgrass regrowth, water clarity, and the return of species that had been displaced or disturbed by decades of aquaculture. Drakes Estero is now a component of the Phillip Burton Wilderness, named for the congressman who championed wilderness protection on the California coast. The transformation is quiet and slow, measured in the spread of eelgrass beds and the behavior of harbor seals no longer disturbed by boat traffic. For hikers who reach the estero's shores, the silence is the point. No motors, no racks, no industry -- just the sound of wind across mudflats and the calls of shorebirds picking through the tide.