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Physical sciences/Physics/Acoustics/Sound/Sound propagation/Acoustic waves

The Randall's Pistol Shrimp is known as the candy cane shrimp for its red and white or red and transparent striped body.
A bat's echolocation can be tricked by smooth, vertical surfaces--like those presented by glass windows.
When these salamanders were first discovered, locals thought they were baby dragons.

There have been significant improvements during the past decade in the worldwide ability to detect covert nuclear explosions equivalent to only a few hundred tons of chemical explosive, experts told a recent AAAS-organized discussion on Capitol Hill.

All but the most determined efforts at evasion likely would be spotted by a growing array of seismometers, radiation monitors, and other devices designed to detect nuclear blasts underground, underwater, in the atmosphere, and in space, they said.