A Killer whale is actually a dolphin.. and not a whale at all.. same with false killer whale..
Unlike most hybrids, which tend to be sterile, Kekaimalu had two female calfs, both sired by male bottlenoses.
As opposed to female bottlenoses... unlike most hybrids.
NIH has them as family Delphinidae:
Pseudorca crassidens for the false killer whale
Tursiops truncatus for bottlenosed dolphin.
Misclassification or something more amazing?