Maybe the killer whale will kill us all. The ocean, which we use a a place of transport of things and ourselves, is their habitat. They need water and cannot live on land. (Hmm so we can not give them any electrical development.) How will they kill us if we live on the land and they in the oceans. We need O2 and killerwhales need H2O. Maybe because they are not on the land, they survived Humanity, and we survived the Killer Whale.