Blue Whale songs consist of an A call, a series of pulses, followed by a long, low moan called the B call. This A-B sequence is repeated over and over again, approximately once every 130 seconds.

The blue whale is the largest animal ever known to have lived on Earth. Blue whales are largest of all baleen whales and are found worldwide. They have a long slender body with a proportionally ...

For years, a strange and unsettling noise coming from the Mariana Trench, the deepest part of the ocean, puzzled scientists.