Blue Whales: Giants of Earth

The blue whale is not only the largest animal to have ever existed on Earth, it's also the loudest. This mammal's low-frequency calls measure around 200 decibels (a jet plane takeoff is around 140dB). However, the pitch of the call is so low, it's beyond human hearing.

Fooled by Nature - Whale of a Tale

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Written by Curiosity Staff August 26, 2014