Occurred on September 7, 2016 Vava'u, Tongabr br : "Male humpback whales gallop in formation. At 15 meters long and 35 tons in weight, they are a powerful sight. The location is Tonga, where males swim around in groups looking for females. We look for the blows the whales produce. Then we dive ahead of them. When the whales are gone, we go up to the boat and dive again, looking for their destination.