The problem is caused by intense noise in the oceans that interferes with the animals ability to communicate, find food and mate. As demand for new oil reserves grows, the seas are being increasingly searched using seismic surveys that create a "colossal" cacophony from 285 decibel blasts that get repeated every ten seconds. For months. The problem is exacerbated by rising CO2 levels changing the ocean's chemistry which allows sound to travel farther. The report, titled "Ocean Noise: Turn it Down", urges tighter rules on the surveys and other measures.
[Source: Environmental News Service]