[Evans, Marv]

There were several things that blew me away on this video. I've heard/read dolphins supposedly have larger brains than we do. That could maybe be associated with having to process the huge amount of echo info they receive continually process.
First the dolphin had to figure out it could be helped by these beings. Second, as said before, it had to overcome some amount of fear to approach the divers. Third was the amount of patience it had to hold position while the diver worked on the line. And fourth, and maybe the most significant thing was how it appeared to correctly respond to the hand signals of the diver. It looked like it actually responded correctly to the diver motioning for it to change position and roll over. I just found it amazing that an apparently wild dolphin could do so many inovative things in an attempt to solve its problem.