Ultrasonic sounds are high-frequency sound waves that exceed 20,000 hertz, a range far beyond what the human ear can detect.

A new first-of-its kind study found the marine mammals vocalized less after a marine heat wave decimated their prey, making whale songs a barometer of the effects of climate change on ocean ...

Communication isn't rare in nature, but whale song features a statistical complexity that matches human speech, and that is ...

What better way to track whales than listening in on them? Passive acoustic monitoring, in which microphones are placed underwater to pick up any sounds, has long helped scientists detect the presence ...

Read more about sperm whales: http://j.mp/sOSais Watch underwater footage of the mammal and hear its strange clicking sounds that are crucial to their survival What ...

"Using sound recordings to monitor whale populations isn't new," said lead author Marissa Garcia of the Cornell Lab of Ornithology's K. Lisa Yang Center for Conservation Bioacoustics. "What makes ...