In the late 1980s, a set of military ears listening for submarines instead picked up something far stranger: a solitary, off‑key voice pulsing through the deep Pacific. The sound did not match any ...

A mysterious sound heard booming from deep under the ocean waves has finally been traced to a fascinating source. First recorded in 2014 in the west Pacific, the "biotwang" is actually the call of the ...

The deep ocean is filled with sounds we still cannot explain. Scientists have recorded strange signals and noises coming from the depths, but many of them don’t match any known animal or natural ...

Ocean researchers have recorded unidentified "quack" sounds in the sea for years. Credit: Mayehem / Getty Images Both scientists and sailors alike have recorded unique, strange noises in the ocean for ...

More than 80 percent of the world’s oceans remain unmapped and unobserved, according to NOAA. Since the 1990s, a network of hydrophones originally built to monitor nuclear weapons testing has picked ...