Whales choose mates based on singing, Australian research suggests Wed Feb 1, 4:18 AM ET SYDNEY (AFP) - It's long been thought that singing is used by whales to attract mates or repel rivals, but new Australian research indicates the serenades may be the basis on which the females select their sexual partners. University of Queensland researchers said Wednesday that they believe the male's songs are part of an elaborate courtship ritual between humpback whales as they appear to be directed more towards females than to warn off rival males. "The male singers are spending a lot more time singing...