Nine miles off the wild coast of southern Alaska, a drone flits over the wide blue ocean. Below, the great, gray forms of humpback whales break through the surface of the water again and again. A pod is on the move, and technology is about to capture something so incredible that it will blow your mind.
How much do we really know about our oceans? Although they envelop a staggering 70 percent of the planet’s surface, experts estimate that we have only explored a tiny fraction of their mass. It’s often said, in fact, that we have a greater knowledge of the Moon than we do of the ocean floor.