About 50 miles off the coast of Newport, warm, mineral-rich liquid spews up like a fire hose through a small hole in the Pacific Ocean floor.
The fluid is believed to originate from two miles below the seafloor, where tectonic plates converge at the Cascadia fault line.
Scientists discovered this geologic feature known as Pythia’s Oasis in 2014, though it didn’t make headlines until after more research and the publication of a study in 2023.
That’s when University of Washington scientists published their findings on the leaky fault, capturing plenty of attention. The Daily Beast called the leak a “harbinger of doom;” Stephen Colbert wondered aloud on his late night show how the “tectonic lube” would affect the Cascadia “megathrust.” Social media reactions alternated between jokes and tips on prepping for disaster.
The topic of the leaky fault off the Oregon coast resurfaced on social media earlier this month, after a pair of popular Pacific Northwest influencers posted on the phenomenon, giving their video the eye-catching title, PNW OCEAN FLOOR HAS A LEAK!? The video generated hundreds of thousands of views on social media — and unlike The Daily Beast back in 2023, didn’t make any mention of imminent doom.
Why is the ocean floor leaking off the Oregon coast?
The liquid is believed to have been flowing for at least 1,500 years, and scientists have assured the public that the seeping does not trigger or predict earthquakes. It does not increase the chance of The Big One hitting along the 700-mile Cascadia Subduction Zone, which stretches from Northern California to British Columbia.
Does the leak off Oregon’s coast mean The Big One is imminent?
But the Pythia’s Oasis seep that gushes some 3,000 feet below the surface of the ocean provides insights.
“What’s really cool about Pythia’s Oasis is that it’s one of the first times where we have a direct window down into the conditions and the fluids that are generated in this environment and that are impossible to access even with a drill ship,” Deborah Kelley, professor of oceanography at the University of Washington, told The Oregonian/OregonLive in 2023.
Pythia’s Oasis comes up from a 2-inch-wide vent on the ocean floor. And unlike the more common cold seeps found along the ocean floor, Pythia’s Oasis spews warm liquid at a temperature four times that of the surrounding seawater. Its liquid also contains elements, including boron and lithium, that are uncommon or unique in seafloor seeps.
What we know about the seafloor leak near the Cascadia fault
“The chemistry of these fluids is unlike anything I’ve ever seen in the ocean, anywhere,” Kelley said.
As for the name itself, Pythia’s Oasis is named for the ancient Greek priestess Pythia, who sat in the Temple of Apollo at Delphi, which was built above the convergence of two fault lines.
©2026 Advance Local Media LLC. Visit oregonlive.com. Distributed by Tribune Content Agency, LLC.
