A six-year study published in 2025 reveals that blue whales have been going silent, with their vocalizations decreasing by nearly 40%.
Scientists observed clear seasonal patterns in whale songs; however, they detected a significant overall decline in the activity. The drop is linked to marine heatwave and noise pollution, as these factors have triggered harmful changes in ocean chemistry, causing the spread of toxic algae. These algae blooms have led to the most widespread poisoning of marine populations, drastically reducing prey availability for blue whales.
As one of the researchers described it, "It’s like trying to sing while you're starving," suggesting the decline in whale song means the species now has scarcer access to food resources, potentially signaling a threat to their survival.
These findings are deeply alarming, as not only do whales play a critical role in maintaining healthy ocean ecosystems, but they are also simply beautiful. Of all the creatures that call Earth home, it's impossible not to admire the whale. They come in a variety of shapes and sizes, each seemingly more beautiful than the next, and their majesty has kept mankind captivated since time immemorial.
Indeed, whales have so much more to offer than just their beauty. They are in fact great allies in the fight against global warming. That’s why it’s especially concerning that marine heatwaves are now causing whales to go silent.
Curious? Check out this gallery to learn how whales help combat climate change.