U.S. ends most ocean monitoring under OOI cuts

The U.S. is restructuring the Ocean Observatories Initiative, cutting most ocean monitoring efforts under a plan tied to major NSF funding reductions. Scientists warn the change could weaken climate and severe-weather forecasting even as previously collected d

For years, the Ocean Observatories Initiative has been keeping a constant watch over parts of the ocean that are hard to reach—through 24/7 monitoring and hundreds of instruments feeding real-time data to researchers, educators and students. Now that attention is being scaled back sharply.

Jim Edson. Principal Investigator of the NSF Ocean Observatories Initiative. says the Trump administration’s slashing of National Science Foundation funding will nearly wipe out most of OOI’s areas of focus. He describes the move as part of what he calls the NSF’s “descoping plan.” Under that plan. Edson says in-water infrastructure from three projects will be removed over the next approximately 15 months. and four out of five arrays will end by Summer 2027.

Even as the in-water monitoring winds down, Edson says previously collected OOI data will remain accessible through the OOI Data Center.

The OOI network was created in the early 2000s and is a $368 million project. It provides 24/7 ocean monitoring using 900 advanced instruments to constantly observe the ocean with state-of-the-art systems. Through the network, scientists have studied marine biodiversity, climate change and current environmental events. The project has also allowed researchers to access data from even the deepest and most hard-to-reach parts of the ocean through a worldwide open-access format.

OOI says its work is “powered by state-of-the-art cyberinfrastructure. ” and that data is freely available to scientists. educators and the public through the OOI Data Portal. In practice. the network’s reach extends beyond top researchers—anyone with an internet connection. including students. teachers. or people working on independent projects. can access real-time information about the world’s oceans. Under the changes described by Edson. the network will not disappear. but it is set to become a much smaller fraction of what it was.

The funding squeeze driving the overhaul comes from the National Science Foundation. an independent federal agency focused on science and engineering research. The NSF has been responsible for major scientific breakthroughs. including MRI technology and research on climate change—but it has faced steep budget cuts under Trump.

The White House moved first by reshaping the National Science Board. On April 24, a White House email dismissed all of its 22 board members. The note told members: “On behalf of President Donald J. Trump. I’m writing to inform you that your position as a member of the National Science Board is terminated. effective immediately.” The message did not provide a reason at the time.

In an email to NPR, the administration pointed to a 2021 Supreme Court case, U.S. v. Arthrex, arguing it had questioned whether “non-Senate confirmed appointees can exercise the authorities” granted to the National Science Board by Congress.

The OOI cuts are not the first time the Trump administration has targeted science research funding. In 2025. the administration cut or froze around $3 billion in previously approved research grants from the National Institutes of Health (NIH) and NSF. Some funds were later reinstated, but around $1.4 billion was frozen at the start of this year. Proposed reductions have also extended to the Environmental Protection Agency (EPA) and the National Oceanic and Atmospheric Administration (NOAA). with many targeting climate-change research and green energy initiatives.

In a proposal laying out its broader plans for science research funding, the administration said major cuts are necessary to ensure taxpayers aren’t paying for a “ ‘woke’ policy agenda” that doesn’t “reflect the values of the vast majority of the American public.”

The concern among ocean researchers is that shrinking OOI monitoring won’t stay contained in ocean science. OOI is also part of a global network called the Global Ocean Observing System (GOOS). Some experts say if funding for ocean monitoring resources shrinks. it could disrupt efforts to combat climate change and destabilize severe weather forecasting globally.

Sabrina Speich. an expert on global ocean monitoring at the Ecole Normale Supérieure (ENS) in Paris. coauthored research on the “critical dependence” of ocean heat monitoring. She argues that ocean heat content is “the most robust indicator of climate change we have—not just of what is happening in the ocean. but of the entire climate system.”.

Speich says losing the ability to track ocean warming would also mean losing key information about the climate system itself. “Lose them. and you lose your ability to track not just ocean warming but the climate system as a whole—they are a proxy for variables that become unavailable the moment the observations stop. Forecasts would continue—but they would degrade, sometimes dangerously so. Atmospheric observations alone are not sufficient,” she said.

Alexander Chase. a microbial ecologist at Southern Methodist University in University Park. Texas. frames OOI’s value differently but lands on the same issue: time. He tells Fast Company that OOI is vital for providing researchers with long-term observational ocean data that helps explain how different scientific fields connect. “Longterm observations like what this program provides allows a bridge across disciplines. ” Chase says. adding that heat monitoring—on which Speich’s research focused—ties to “just about everything on the planet.” “That heat and energy stimulate all of life on earth. ” he said.

In that view, losing most of the program doesn’t only limit ocean research. It also limits “our ability to predict how” ocean changes affect other ecosystems.

There is a clear timeline in Edson’s description: three projects’ in-water infrastructure removed over roughly 15 months. with four out of five arrays ending by Summer 2027. The U.S. is essentially choosing a future with far fewer live measurements at sea. while pointing to the OOI Data Center as the place where what has already been collected can still be used.

The tension is stark for those who depend on continuous observations. Data can be preserved and shared, but for climate signals and environmental forecasts, the question is what happens when the instruments stop sending new information—especially in places the ocean has always kept from easy view.

Ocean Observatories Initiative OOI NSF Jim Edson ocean monitoring climate change research severe weather forecasting Global Ocean Observing System OOI Data Center arrays