This video says about itself:
2 March 2016
While researching pygmy blue whales in the South Taranaki Bight region of New Zealand, Leigh Torres used a drone to capture footage of a baby blue whale nursing. This is believed to be the first time that aerial footage has documented the nursing behavior of this endangered marine species.
To support their hulking bodies, blue whales use various acrobatic maneuvers to scoop up many individually tiny prey, filtering the water back out through massive baleen plates. In most cases, the whales roll to the right as they capture their prey, just as most people are right-handed. But, researchers now show that the whales shift directions and roll left when performing 360° barrel rolls in shallow water: here.