Porpoises are entirely dependent on their hearing for survival. They navigate, hunt, and communicate by emitting rapid click ...

New research shows that the harbor porpoise, a small whale native to Danish waters, appears to be equipped with an inbuilt "ea muffs" that helps it shield itself from intense noise, such as that from ...

Earth constantly vibrates with a low-frequency "hum," imperceptible to humans, generated primarily by ocean waves interacting ...

Since the early 1990s, residents in and around Taos, New Mexico, have reported hearing a persistent low-frequency sound with no visible or measurable source. The sound is described as external, ...