News Animals

Sonar causes rock-concert effect in dolphins

Study finds temporary hearing impairment in a bottle-nosed exposed to recordings of ship pings

By Susan Milius

- More than 2 years ago

Exposing a bottle-nosed dolphin to a couple of minutes of nearby sonar pinging could cause some temporary hearing impairment, a new test finds.

HEAR ME NOW? A trained bottle-nosed dolphin takes a hearing test as sensors pick up changes in the animal’s brain waves that indicate sound detection.