শনিবার, 21.04.18
 

How do whales sing? - Stephanie Sardelis

329596 মতামত - 10 নভেম্বর, 2016

View full lesson: http://ed.ted.com/lessons/how-do-whales-sing-st...

Communicating underwater is challenging. Light and odors don’t travel well, but sound moves about four times faster in water than in air — which means marine mammals often use sounds to communicate. The most famous of these underwater vocalizations is undoubtedly the whale song. Stephanie Sardelis decodes the evocative melodies composed by the world’s largest mammals.
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