Dolphin and whale mate to create a 'wolphin' By Stephen Adams Last Updated: 6:55am GMT 27/03/2008 If life on Earth was not strange enough, nature occasionally throws a very unusual creation into the genetic mix. Most hybrids tend tend to be sterile, but Kekaimalu the 'wolphin' has given birth to two calfs Although it is extremely rare, animals occasionally succeed in producing offspring with mates from closely related species. Scientists believe some actively try to mate outside their own species to increase the diversity of their wild populations. But most hybrids are born in captivity - which may suggest sexual...