The Oceans Are
in Deep Trouble.

The Atlantic Meridional Overturning Circulation — AMOC — is one of the most important systems on Earth. It is a vast network of ocean currents that moves warm water from the tropics north toward Europe, and cold deep water back south. It is the reason London is warmer than Newfoundland despite being further north. It is one of the engines of the world's weather.

A growing body of scientific research suggests the AMOC may be on course to collapse, potentially within this century. If it does, the consequences would be devastating: accelerated sea-level rise along the entire US East Coast, a sudden deep-freeze winter across Europe, and prolonged droughts across a swath of Africa. Hundreds of millions of people would be directly affected. Trillions of dollars of property and infrastructure would be at risk.

To know if the AMOC is collapsing, you have to measure it. You have to know the temperature, salinity, and velocity of the water at multiple depths, at multiple locations, continuously, for years. That's what the Ocean Observatories Initiative — the OOI — has done since 2016. It is the only thing of its kind in the world built and maintained by the United States. It is now being dismantled.

The Ocean Observatories Initiative began in 2016 after years of planning. The National Science Foundation funded the construction of arrays of seafloor sensors and surface buoys at five strategic deep-ocean locations. The instruments measure water temperature, salinity, dissolved oxygen, ocean acidity, current speed, and dozens of other variables in real time. The data is publicly available to researchers worldwide.

It is the kind of infrastructure that takes a generation to design and build — and that nobody else builds because it is, financially, a poor private investment. The data is free. The findings benefit everyone. No one is making money on AMOC monitoring. Which is exactly why it is the federal government's job.

The Trump administration first proposed an 80% cut to the OOI in the FY2025 budget. Congress rejected it. The administration proposed the same cut in the FY2026 budget. Congress rejected it again.

Then, in May 2026, the National Science Foundation simply announced it would dismantle the arrays anyway — with funds restored by Congress already in hand. The justification cited by NSF spokesperson Michael England, given to the New York Times: the move "aligns with NSF's wider strategy to have a nimbler approach to prioritizing support for evolving scientific priorities."

The Trump administration's stated rationale, from a policy memorandum accompanying the FY2027 budget proposal: federal climate and environmental research programs have "drifted away from core agency missions and become vehicles for activism and diversity initiatives." The memorandum specifically criticized NOAA-funded grants that supported programs "that promoted 'climate anxiety' discussions, diversity-focused climate education initiatives, and what officials described as 'radical community activism.'"

The OOI does not run climate anxiety discussions. It does not run diversity initiatives. It is a set of physical instruments in the deep ocean measuring temperature and salt. The data the OOI collects is needed regardless of one's politics, because the ocean does not have politics. If the AMOC collapses, it collapses for Democrats and Republicans alike.

It would be one thing if the OOI were being dismantled because the science it produces had stopped mattering. The opposite is true. The need for ocean monitoring has never been higher. Stefan Rahmstorf, professor of physics and oceans at Potsdam University and one of the world's leading AMOC researchers, told CNN: "Ongoing monitoring of the ocean is critical, especially now. Concern in the oceanography community about major ocean current changes ahead is large."

What the OOI's instruments measure cannot be reconstructed later. Once the buoys are pulled from the water and the seafloor sensors are recovered, the gap in the data record is permanent. Future researchers will look at the ten-year window from 2016 to 2026 — and then a blank space — and then, perhaps, a resumed record if a future administration rebuilds the infrastructure at multiple hundreds of millions of dollars in cost.

This is the deepest cost of the cuts: not just the money saved (which is small in federal terms), and not just the immediate loss of monitoring capacity. It is the breaking of a continuous scientific record. The ocean has not stopped changing. The instruments have stopped measuring it.

The Ocean Observatories Initiative has cost approximately $368 million across its entire ten-year operational history. That works out to about $37 million per year — less than the cost of one F-35 fighter jet.

Sen. Angus King (I-ME) said in May, in a different context: "NPS budget is cut by one third. About $1 billion, which is one day of the Iran war just to put it in context. I don't understand why we are cutting the most popular program the federal government runs."

The same math applies here. The entire ten-year cost of the OOI is less than one quarter of one day of the Iran war. The cuts being made to American oceanographic monitoring are not driven by financial necessity. They cannot be — the numbers are too small. They are driven by something else.

The numbers above are sourced from CDCR/Pentagon/HuffPost/CSIS records cited elsewhere on this site. They are presented here to establish a simple fact: the United States is not running out of money. The cuts to scientific infrastructure are being made by choice. The administration has chosen to spend on fighter jets, foreign wars, and settlements for the president personally. It has chosen not to spend on the instruments that watch the ocean.