Unexpected Science: When Seismologists Listen to Underwater Earthquakes and Discover Whale Songs

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Sometimes, while exploring one field of science, researchers stumble upon unexpected findings in another, leading to discoveries of immense value. A prime example is how seismology tools used to monitor underwater earthquakes have enabled humans to listen to the “symphony” of fin whales – a species listed as endangered.

Seismologist William Wilcock from the University of Washington-Seattle deployed a hydrophone system for three years to monitor geological activity around hydrothermal vents on the ocean floor. During this process, he developed algorithms to filter out the low-frequency sounds of fin whales from the natural noises of the seafloor. Fascinatingly, the research team then reversed the approach—shifting their focus from seismic events to analyzing the unique sounds of the whales.

From the collected data, the research team was able to map the migration routes of the whales and even correlate their calls with behaviors and group sizes. This information not only provides a deeper understanding of the species’ habits but also opens up opportunities to better protect and monitor the habitat of fin whales.

The next step is to expand this data collection method to additional seismic observation stations in the region, creating a more comprehensive picture of whale activities. This holds significant importance, especially as fin whales face extinction risks due to environmental changes and human exploitation.

These findings not only underscore the diverse applications of technology but also serve as a reminder of the importance of conserving ocean ecosystems. With collaborative efforts across scientific disciplines, the future of majestic species like fin whales can be effectively safeguarded.