Blue whales, the largest animals on the planet, are falling eerily silent across vast stretches of the Pacific and Southern Oceans. Scientists monitoring their acoustic behaviour have reported a sharp drop in the whales' distinctive low-frequency calls, a shift that is prompting concern among marine researchers.
The disappearance of these vocalisations is more than an acoustic anomaly. It may indicate a deeper environmental crisis, particularly linked to declining food supplies and increased human activity disrupting ocean ecosystems.
