earliest fossil records of Orcinus orca date back about five and a half million years, suggesting they have been around at least six million years and probably longer. In those six million years, orcas have been largely undisputed atop the oceanic food chain. They have been phenomenally successful over all those eons; they reside in every ocean on the planet and are the apex predator in each one of them. They have no predators themselves.
Orcinus Orcas evolved at least 6 million years ago
