Drone footage shows orcas chasing and killing great white shark

Scientists say behaviour, filmed in South Africa, has never been seen in detail before - and never from the air

Scientists have published findings confirming that orcas hunt great white sharks, after the marine mammal was captured on camera killing one of the world's largest sea predators.

A pod of killer whales is seen chasing sharks during an hour-long pursuit off Mossel Bay, a port town in the southern Western Cape province, in helicopter and drone footage that informed a scientific study released this week.