I was in Tonga where humpback whales migrate to mate and give birth. On the day I took this photo, we found a mother and calf. The calf was already quite big and very curious. As soon as it saw us, it came straight at us. It was a bit hard to focus on what I was doing with the camera while I had a 4-meter, 1.5-tonne baby whale chasing me around. One of the best memories of my life!