Porpoises have the amazing ability to not only locate prey with a beam of sound, but adjust the field of clicks and buzzes as they move in for the kill, preventing the fish from slipping away, a new ...

A porpoise’s forehead acts like a ‘metamaterial’ to create the directional sound beam used by the marine mammals to detect and track prey, claim researchers in the US and China. The acoustics experts ...

The stubby gray fin of the harbor porpoise is popping up again among the waves of Puget Sound. In what scientists are calling a small but hopeful sign of the sound's recovery, the harbor porpoise is ...

(Phys.org)—A team of researchers in China has solved the mystery of how porpoises are able to locate tiny prey using sonar with wavelengths that seem too large to be of much use in such applications.

After nearly disappearing from local waters for decades, harbor porpoises are once again a common sight in Puget Sound. “They are back, big time,” says biologist John Calambokidis with the Cascadia ...

A team of scientists used playbacks of recorded and artificial porpoise clicks to develop an adaptable method to assess the area in which acoustic monitoring devices can reliably detect these sounds ...

Porpoises communicate with each other using sounds. Therefore, they are highly sensitive to noise, such as ship noise. A new study shows that porpoises flee from and stop feeding when disturbed by ...

Using recordings from MBARI's deep-sea hydrophone, marine-mammal researchers have found that the sounds of seal bombs could have significant impacts on the behavior of harbor porpoises in and around ...