Blue whales go quiet off California after marine heat wave

The waters off California have grown quieter, and scientists are listening.

New research from the Monterey Bay Aquarium Research Institute (MBARI) has found a sharp decline in the number of blue whale songs detected in the California Current Ecosystem following a prolonged marine heat wave. The study, which spanned six years of acoustic monitoring, revealed that blue whale vocalizations dropped significantly during and after the climate event known as “The Blob.”
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