dolphin technology

These dolphins at SeaWorld in Orlando Florida actually create a kind of technology to play with. They apparently have a technique to create a continuous stream of air underwater in a way that makes the bubble ring not rise to the surface, but stay whirling underwater. This gives the dolphins the opportunity to manipulate it, break it, reshape it, much like we sketch with pencils. I wonder if they find out this technique by accident or they develop some kind of cognitive understanding of the physics of air in water that guides them in learning to create these underwater wonders. Maybe in the future we will combine our terrestrial intelligence with that of the dolphins. If you know any interesting papers on dolphin neurology, they are highly welcome.