In September of 2016 I was lucky enough to go and swim with humpback whales in Tonga. It is an amazing experience just seeing them from the surface. To now have seen them underwater was just that much more amazing. Over the 6 days we swam, we saw many mums, calves and males. The calf in this image was quite inquisitive and came in to take a look at us, wondering what these strange things bobbing around on the surface were.