Video: Relatives among themselves: Humpback whales and dolphins appear in front of Sydney

The crew of a news helicopter discovered the marine mammals during a flight over the sea off the Australian metropolis. From April to August, the humpback whales migrate north to calve.

The crew of a news helicopter discovered the marine mammals during a flight over the sea off the Australian metropolis. From April to August, the humpback whales migrate north to calve.