Swimmer in Tonga has close-encounter with humpback whales

While swimming in the deep blue open sea off the coast of ʻEua, an island in Tonga, these freedivers encounter six adult humpback whales playing around. Each whale weighs over 20 tons and is 10 meters in length. As they approach at a respectful distance, they start singing and coming closer to them! What a breathtaking experience!