A humpback whale and her calf have managed to escape after becoming entangled in a shark net off the coast of Queensland..
Humpback whales spend the austral summer in Antarctica before migrating north during the winter months to breed and give birth in warmer waters. Their migration route takes them along the east or west coasts of Australia.
Shark nets regularly entangle other marine life. Since 2001, 82 humpbacks have become trapped in the nets.
Local conservationists have called for the nets to be removed during the whales' migration season now that alternatives, such as using drones, offer a less invasive but successful way of monitoring shark movements.