well i swam with dolphins quite a few times, and i can tell you they are ****ing smart. its almost like they can read your thoughts, and tell what mood you're in. humans are naturally inventive, thats our nature. just because dolphins aren't so innovative dont mean they aren't smart. and bat, when you swim with dolphins, if you hold onto the dorsal fin only, their tails will break your bones, they're very strong. if you want to hitch ride, you put left hand on pectoral fin, and right hand on dorsal, so you are off to the side