A good sign that the energies of the earth are changing!

Blue whale songs are getting deeper, say baffled scientists

By Claire Bates
Last updated at 1:43 AM on 04th December 2009

Blue whales are famed for their haunting songs that travel thousands of miles under the ocean. Now scientists have discovered the world's largest mammals are singing in deeper voices every year - and they are not sure why.

A study in the journal Endangered Species Research, has found male blue whales all over the world have lowered their tone.

Mark McDonald of Whale Acoustics first noticed the change about eight years ago when he had to shift automated blue whale song detectors off California to lower frequencies....

Read more: http://www.dailymail.co.uk/sciencete...#ixzz0ZlWnT7Sv