Rather than replacing humans, the "robots" are there to make their lives easier. The small waterproof rig is controlled remotely. Photographers have full control over the camera inside, allowing them to change various settings and zoom in and out for framing. The rig itself can rotate the camera across three axes, so photographers can choose from a wide variety of angles for their photos on the fly.

Of course, the photographers controlling the bot can see what the camera sees on a display, which makes a huge difference from traditional remote setups, which were just a case of placing the camera where you wanted it and leaving it there for the day. "The robots are just another tool for me to get better photos," Bello told CNN. "A robot doesn't think on its own or come up with ideas. But it can help us get photos more efficiently than ever before."

The Big Picture is a recurring feature highlighting beautiful images that tell big stories. We explore topics as large as our planet, or as small as a single life, as affected by or seen through the lens of technology.