The National Oceanic and Atmospheric Administration (NOAA) has partnered with Google AI to analyze an ocean of long-term passive acoustic data. Using AI and machine learning, they have analyzed in hours what would otherwise take decades to process.
In 2014, an Oregon State University autonomous seaglider survey in the Mariana Archipelago heard a new sound: a mechanical-sounding whale vocalization. They called it a “Biotwang.”
Without visual observers to identify the source of the sound, they guessed that it might be made by a baleen whale, but could not determine the species.
In 2018, NOAA scientists conducted a visual and acoustic survey of marine mammals in the Mariana Archipelago. During the month-long survey, they spotted 10 different groups of Bryde’s whales. In nine of those groups, they also recorded Biotwangs—solving the mystery of the source of the unique call.