Scientists in southern China have transformed earthquake-monitoring equipment into an AI-powered whale detection system, offering a cheaper and more effective way to track endangered Bryde’s whales.
 |
| Researchers have discovered that earthquake-monitoring devices combined with AI can capture whale sounds beyond the range of traditional monitoring systems, opening new possibilities for marine conservation. Imag: CH |
Tech Desk — June 7, 2026:
What if the key to understanding whales was hidden inside equipment designed to detect earthquakes?
That question is now driving excitement among marine scientists after researchers in southern China successfully transformed earthquake-monitoring technology into a powerful tool for tracking endangered whales.
The breakthrough combines artificial intelligence with land-based seismic equipment, creating what researchers describe as a kind of marine stethoscope. The system can detect the deep, low-frequency sounds produced by whales as they travel through the seabed.
The idea is surprisingly simple.
Instead of relying solely on underwater microphones, scientists used a seismometer installed on an island in the Beibu Gulf of the South China Sea. With the help of advanced AI algorithms, the device was able to pick up vibrations generated by whale calls and separate them from background noise.
The results were striking.
The AI model, trained using more than 1.7 million labeled seismic samples, identified whale vocalizations with an accuracy rate of 99 percent. Such precision demonstrates how artificial intelligence is increasingly becoming a valuable partner in scientific discovery.
More importantly, the technology revealed something researchers did not expect.
For years, scientists believed Bryde’s whales largely disappeared from the region after April. However, data collected over an entire year showed the whales remained in coastal waters until at least July.
That finding challenges previous assumptions about the species' seasonal movements.
The longer presence of the whales suggests the animals may spend more time feeding, socializing or breeding in the area than earlier studies indicated. Reports from local fishermen who spotted whales during July further strengthened the researchers' conclusions.
The study also uncovered sounds that are almost impossible for humans to hear.
Researchers detected whale vocalizations as low as 5 hertz, frequencies that fall below the limits of human hearing and even beyond the range of many traditional hydrophone systems. These signals traveled through the seabed and appeared as tiny seismic vibrations.
Scientists believe some of these sounds may be linked to courtship or breeding behavior.
If confirmed, the discovery could provide valuable clues about the reproductive habits of Bryde’s whales, a species that remains relatively understudied despite growing conservation efforts.
The significance of the research extends far beyond a single whale population.
Monitoring marine mammals has traditionally required expensive underwater equipment, research vessels and extensive field operations. Such projects can be difficult to sustain, particularly in remote areas or developing regions.
By contrast, land-based seismic stations already exist in many coastal locations.
Repurposing these networks could dramatically reduce monitoring costs while allowing researchers to collect continuous data over long periods. That combination of affordability and efficiency could transform how scientists study marine ecosystems.
The technology also arrives at a crucial time for conservation.
More than 70 Bryde’s whales have been identified in the Beibu Gulf, making the population one of the region's most important protected marine groups. Understanding where the whales travel, how long they stay and when they breed is essential for designing effective conservation strategies.
Beyond whales, the approach could eventually help researchers monitor other marine species whose movements and behaviors remain difficult to track.
The study highlights a broader trend shaping modern science. Technologies originally developed for one purpose are increasingly finding new applications when paired with artificial intelligence.
In this case, a tool designed to listen for earthquakes has become a window into the hidden lives of whales.
As AI continues to reshape scientific research, innovations like this demonstrate that some of the most important discoveries may come not from building entirely new technologies, but from finding creative new ways to use the ones that already exist.