ASIEH NAMDAR, CNN ANCHOR: From dogs, we move on to whales -- humpback whales. They devote most of their time to mating and reproducing. They are drawn together by a song of sorts performed by the male.</s>RALPH WENGE, CNN ANCHOR: Now that the tune has changed for humpback whales off the Australia's East coast, they are singing a new mating song after hearing a different tune from their cousins in the Indian Ocean. Australia's Network Ten let's us listen to the love call.</s>ALISON BLANKSBY, NETWORK TEN CORRESPONDENT (voice-over): When it comes to big (ph), they are the Barry Whites of the deep. The love songs of these West Australian humpbacks are so infectious, their intrastate counterparts are now all singing their song. It's a far cry from this, their old mating tune.</s>MICHAEL NOAD, WHALE RESEARCHER: The song's extremely complex and highly structured. For all that complexity, really, the message is very simple. It's just, I'm available.</s>BLANKSBY: Four years ago, researchers noticed two whales among the 3,000 strong population were singing a different mating call. But instead of being drowned out by the majority, the newcomers became top of the pops.</s>NOAD: If you all these males serenading the females, all using the same song, all the time, they just keep singing it over and over and over again; and sooner or later, the females get bored.</s>BLANKSBY: Out to make some beautiful music together, the males got hip and all that serenading seems to have done the trick; the humpbacks are heading back down the coast to Antarctica with a number of calves in tow. Whether their latest song will stay at number one remains to be heard.</s>NOAD: Anything new will do, as far as the whales are concerned. The novelty is what they really want.</s>BLANKSBY: Alison Blanksby in Sydney, Australia for CNN WORLD REPORT.
Humpback Whales Sing a New Love Song