As far as I know, Dolphins cheerfully swim on their sides when they want to. The point is they don't break the surface except when they want/have to so it does

As far as I know, Dolphins cheerfully swim on their sides when they want to. The point is they don't break the surface except when they want/have to so it does them no good. Here's a video of a dolphin swimming in shallow water: http://m.youtube.com/watch?v=Wk0X9hbaTuU http://m.youtube.com/watch?v=Wk0X9hbaTuU