Have you ever seen the underside of a turtle flying by you underwater? The amazing feeling you get when it happen is an outer body experience. I don't even know if this has been scientifically documented. It would probably be a great thing to study. Also too who or what outlives a turtle? Also two turtles are the Yodas of the sea , They can read your mind so think pleasant thoughts.You can experience this free diving but there is no better feeling then feeling the sensation on SCUBA or S.C.U.B.A.