Do dolphins use nonlinear mathematics?

Research from the University of Southampton, which examines how dolphins might process their sonar signals, could provide a new system for man-made sonar to detect targets, such as sea mines, in bubbly water.

How bats 'hear' objects in their path

(PhysOrg.com) -- By placing real and virtual objects in the flight paths of bats, scientists at the Universities of Bristol and Munich have shed new light on how echolocation works.  Their research is published today ...

3-D sonar provides new view of Civil War shipwreck

The remains of the only U.S. Navy ship sunk in combat in the Gulf of Mexico during the Civil War can now be seen in high-resolution, 3-D sonar images from the Gulf's murky depths.

Military sonar can alter blue whale behavior

Some blue whales off the coast of California change their behavior when exposed to the sort of underwater sounds used during U.S. military exercises. The whales may alter diving behavior or temporarily avoid important feeding ...

Slam dunk for future smart robots

(PhysOrg.com) -- 'What does the world look like' and 'where am I' are two questions robots must solve if they are to act autonomously in an unknown environment. Work by European researchers will help future robot generations ...

Oceans becoming noisier thanks to pollution -- report

The world's oceans are becoming noisier thanks to pollution, with potentially harmful effects for whales, dolphins and other marine life, US scientists said in a study published Sunday.

Nanotech Speakers Hold Promise for Sonar Uses

(PhysOrg.com) -- UT Dallas researchers have found that carbon nanotube sheets perform well as underwater sound generators and noise-canceling speakers, two highly desirable traits for submarine sonar and stealth capabilities. ...

Underwater robot probes depths for Istanbul quake clues

A state-of-the-art underwater robot called BOB may hold the key to protecting millions of people around Turkey's biggest city against a massive earthquake scientists say is all but inevitable.

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