A blue whale mother and her calf, taken in the Sea of Cortez. This is one of two places in the world where blue whales are known to give birth. During the filming of this sequence, this was the only mother and calf that the crew could find, and they managed to spend a few magical days filming them with a drone, in completely flat calm water. This allowed them to see right through the water, and get an incredibly intimate perspective on the tactile relationship between mother and calf. These are some of the first ever images of a blue whale mother and calf.