Pilot whales form heart shape before mass stranding in Western Australia

Drone images show a pod of pilot whales appearing to form a heart shape in the waters off Cheynes Beach in Western Australia before more than 50 died overnight after stranding themselves on a beach.

The authorities said Wednesday they were "optimistic" that the other 45 whales in the pod could survive.Fifty-one of them died overnight, despite the efforts of volunteers and staff from the state's Parks and Wildlife Service. Late on Wednesday afternoon, incident controller Peter Hartley said the surviving whales were being monitored.