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Scientists find blue whales suddenly going silent. Why they think it's happening.
CALIFORNIA COAST, AUG 12 – Blue whale song declined 40% over six years due to marine heatwaves and krill loss, signaling ecosystem disruption and stressing whale populations, scientists report.
- In recent years, researchers have found that blue whales' vocalizations decreased by approximately 40% over six years, indicating they have largely gone silent.
- By triggering toxic algae blooms, warming oceans reduce krill, linking heatwaves and the 4.5-degree rise from The Blob to whale food loss.
- Researchers at the Monterey Bay Aquarium Research Institute and Cascadia Research Collective spent six years monitoring whale sounds off California with hydrophones, recording a 40% drop in vocalizations.
- Amid these changes, researchers say the ocean's silence signals ecosystem shifts and could alter how oceans absorb carbon, reflecting fundamental marine life changes.
- Amid intensifying warming, researchers call for stronger carbon emission regulations, stricter ship noise controls, marine protected areas, and scaling up acoustic monitoring.
32 Articles
32 Articles
Blue whales have gone silent and it's posing troubling questions
Blue whales have been singing less, and it could be a bellwether of climate change. Warming oceans affect the availability of their only food source, krill, and according to a study published in the journal PLOS One, there's a correlation between blue whale vocalizations and their food supply.Deep silenceThe study tracked over six years of acoustic monitoring in the central California Current Ecosystem and found patterns. And during those years,…
Blue whales are singing less
A startling revelation has been uncovered by a major six-year acoustic study published in PLOS ONE: scientists have confirmed that blue whales are growing silent. The study, led by biological oceanographer John P. Ryan, monitored blue, fin, and humpback whale songs using an underwater microphone 3,000 feet deep off the California coast. The research began in 2015, right at the peak of a… Source
ThePatriotLight - Blue whales going silent off coast of California alarming scientists with greater ecosystem danger
ThePatriotLight - Sounding the alarm. The sound of the blue whale’s singing has decreased off the coast of California, frightening scientists who believe it is an indication of greater ecosystem danger. Scientists tracked the auditory songs of three whale species – blue, fin and humpback – in the North Pacific Ocean in the California Current Ecosystem (CCE) over six years. A blue whale surfaces in the Pacific Ocean near Dana Point, California. A…
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