If people want healthy oceans, we need healthy shark populations, says marine ecologist.

The two male orcas who patrol the coast from Namibia to Gqeberha are back in the Cape’s sea

But the apex predators also face threats from human activity in South African waters and their numbers are fast dwindling as a result

Government panel blames killer whales for the depleted population of great white sharks, but experts say overfishing is the big culprit that is not being addressed