From Daily Mail: Many blue whales have mysteriously gone silent in the ocean, raising alarm bells among the scientific community. Acoustic recordings were captured off the coast of Monterey Bay, California to understand the impact of human activity on marine life.
Researchers at the Monterey Bay Aquarium Research Institute found that blue whale songs had dropped by almost 40 percent over the past six years. During this time, the team identified that major heat waves had engulfed the region, allowing toxic algae to bloom and kill off the mammals’ food supply.
‘It caused the most widespread poisoning of marine mammals ever documented. These were hard times for whales,’ John Ryan, a biological oceanographer at the Monterey Bay Aquarium Research Institute, told National Geographic.
The marine heatwave, Dubbed the Blob, started in 2013 and over time has raised ocean temperatures by more than 4.5°F.
The temperatures harm the krill and anchovy populations, scientists say, sparking concern as krill is a key food source for many marine species.
A deeper crisis may be unfolding, the report states.
The Blob hasn’t affected Humpbacks due to their “diverse diet and resilience to tough conditions mean,” but blue and fin whales almost excsivy dine on krill. Both have not been singing as much in the past few years.
Ominous warning for humanity as blue whales go mysteriously silent https://t.co/63d5ParGxs
— Daily Mail Australia (@DailyMailAU) August 6, 2025
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