Imagine a layer of the ocean so teeming with life that, when first discovered, scientists mistook it for the seafloor. This ...

Imagine a silent world beneath the ocean, where darkness stretches for miles and the only clues about what lurks below come ...

This stranding—caused by the passage of a single US Navy ship using active mid-frequency sonar—resulted in 17 deaths and the loss of a well-studied population of beaked whales from the area. Negative ...

This Sonar Display is comprised of a "waterfall," many sound waves arranged vertically. Scrolling upwards, these waves represent different sound patterns over time. Moving horizontally across the ...

UChicago Medicine is using a new technology to destroy liver tumors without radiation, chemotherapy or even cutting the skin.

Even though radar uses electromagnetic waves to detect objects, the same principle has been used with other propagating waves, most often sound waves. While a well-known use of this is sonar ...

Sonar technology emits sound vibrations into the water, then records the echoes of that sound off various distant objects. This method is useful for mapping the ocean floor and detecting ...

Naval sonar systems work like acoustic floodlights, sending sound waves through ocean waters for tens or even hundreds of miles to disclose large objects in their path. But this activity entails ...