The disparity between our actual knowledge of the ocean and its importance is almost embarrassing. Roughly 71% of the planet is covered by water. Most of the oxygen we breathe comes from it. It supports a global economy valued at well over a trillion dollars and provides food for billions of people. Nevertheless, only 15% of the seafloor has been mapped using contemporary techniques. Human eyes have never seen more than 5%. The ocean is still remarkably obscure for something so essential to life on Earth; in some ways, it is even less understood than the surface of Mars.
A growing partnership between NOAA and MIT researchers aims to bridge that gap. Not in the future. Right now.
The MIT Media Lab’s Open Ocean initiative and Zero-Power Oceans IoT program, which has spent the better part of a decade rethinking what it truly means to connect sensors underwater, are the foundation for the project. The Bluetooth and WiFi protocols that permeate the rest of our world are examples of standard wireless technologies that cannot operate below the ocean’s surface. Seventy percent of the planet has been effectively kept offline by that one fact, making it invisible to the kind of continuous data infrastructure that is essential to modern science. The researchers at MIT did not attempt to modify pre-existing instruments.
They created something novel: inexpensive, net-zero-power underwater sensors that can communicate using a method known as Piezo-Acoustic Backscatter, which uses the piezoelectric effect to send signals at almost zero energy. Each node in the system costs less than $100. It has received awards from NOAA and the U.S. Department of Energy. It has appeared in over a dozen publications. It’s also subtly evolving into the hardware foundation of something much bigger.
The other half of the equation comes from NOAA. The organization has invested in telepresence-capable research vessels, high-bandwidth satellite links, and programs for autonomous underwater vehicles that can provide scientists on land with real-time data streams from the deep sea. In certain situations, what used to require a ship berth and weeks at sea can now be completed from a laptop in a university lab. A growing fleet of vessels is beginning to provide the constant connectivity that the younger generation of researchers has grown up expecting. The ships and the satellites have never really presented a problem. It has been the lack of a dense, long-lasting, reasonably priced sensing layer beneath the water itself, which could provide real-time data to that infrastructure in the same way that weather stations provide data to a forecast model.
Perhaps the closest thing to a true ocean intelligence platform to date is the combination of NOAA’s real-time data pipelines and MIT’s underwater IoT architecture. A system where sensors dispersed over thousands of miles of open ocean continuously report temperature, salinity, acoustic signatures, and biological activity back to centralized models that can make sense of it all in motion, rather than a platform in the brochure sense. AI-driven acoustic sensors known as OpenEar, which gather continuous underwater sound data on their own, have already been implemented by the NOAA-backed BLUEiQ program. When you combine that with the ROV telepresence infrastructure already in place on NOAA vessels and MIT’s backscatter network, the outline of something truly novel begins to take shape.
After serving as chief scientist on the Nautilus exploration ship for many years, oceanographer Katy Croff Bell founded the Open Ocean initiative. She stated that the lab’s goal is to “understand the ocean and make it available to people.” The simplicity of that phrase is almost disarming. However, be aware of what it implies: availability refers not only to scientific access but also to the kind of democratized public visibility that alters societal perceptions. The sea has always seemed far away. It would be truly different to watch it turn into a readable map in real time, where fish populations move, currents change, and methane plumes emerge.
There are still significant challenges. Compared to terrestrial networks, underwater communication is still limited in bandwidth. Large-scale sensor array deployment across open waters is both financially and logistically challenging. Furthermore, coordination between academic institutions and federal agencies seldom advances as quickly as the underlying technology. It’s still unclear if the entire platform vision can be realized in the next ten years or if bureaucratic obstacles and funding cycles will prevent the parts from coming together to form a cohesive whole.
However, something is in motion. The sensors are becoming more affordable, the satellites are becoming faster, and the researchers, who are dispersed throughout university labs, shore stations, and ships, are discovering ways to collaborate that were not feasible even five years ago. Nothing has changed in the ocean. Humanity’s capacity to hear it is evolving.
