Source AP ©

Manmade underwater sounds deafen fish

Increasing manmade sounds underwater make fish deaf.

Michael Smith, an assistant biology professor at Western Kentucky University, cited U.S. Navy sonar and oceanic shipping as possible noise pollution for fish, which use sound to find their way around and listen for predators.

His study will expose locally bought rainbow trout, silver perch and goldfish to various sound combinations at a special sound booth.

Then tests will see whether the fish have hearing loss. The fish's brain waves will be recorded through electrodes while the fish listen to tones.

"We give a series of pure tones to fish through an underwater speaker, and we increase the intensity of the tones until we detect brain-wave activity," Smith said.

Comments
China wants Moscow to confront pressure from Washington together
It is about time Russia should exit Western project
U.S. Humiliates South Korea, Threatens North Korea
USA will seize Kuril Islands immediately if Russia delivers them to Japan
Cars freeze deep into ice as Arctic cold hits Russia
NATO embraces Russia with wings of love
Europe's largest mosque to be built in Crimea
Ticking Time Bomb: Countdown to Armageddon
Ticking Time Bomb: Countdown to Armageddon
Ticking Time Bomb: Countdown to Armageddon
Cars freeze deep into ice as Arctic cold hits Russia
Cars freeze deep into ice as Arctic cold hits Russia
Cars freeze deep into ice as Arctic cold hits Russia
China wants Moscow to confront pressure from Washington together
China wants Moscow to confront pressure from Washington together
IOC wants Russia to boycott 2018 Winter Games and exit Olympic movement
IOC wants Russia to boycott 2018 Winter Games and exit Olympic movement
IOC wants Russia to boycott 2018 Winter Games and exit Olympic movement
Ticking Time Bomb: Countdown to Armageddon
Ukraine's Western allies point their guns at President Poroshenko
IOC wants Russia to boycott 2018 Winter Games and exit Olympic movement