What worries me is that the lady voice on the video seems to imply at the end, that researchers should do something about this. An elitist concept of managing nature. The area near south Africa is teaming with fish and seals such that every creature that dies causes hundreds down the food chain to thrive. So a few orcas killing a few white sharks between both of them gorging on seals and cod is best left to nature to discover the correct balance or even imbalance if its time for a species to go. Species disappear every day. And new ones come into existence at a similar pace.
The Law of the Jungle cannot be broken..................