"Whales and dolphins have to coordinate breathing with lactation, and what we can see in this video is that the calf is alternating between coming to the surface to breathe and then going under its mom for a period to suckle," Leigh said in the video.
What makes this footage so exciting for Leigh and her research team is that much is still a mystery about how blue whales nurse. "What is thought is that she might actually squirt the milk into the calf's mouth, but we are not really sure," she told a local newspaper.
Although they're by far the biggest animals, there's still so much to learn about these whales with tongues the size of elephants.
Leigh hopes the footage will inspire humans to have a greater appreciation for these magnificent animals.