I agree with the assessment that the movie points out how we, as caretakers of the Earth, tend to abusiveness and misunderstanding. I agree also that it is a hokey telling of that theme, but still effective. I might venture that a contributing factor in its effectiveness is the beautiful music created by George Delerue. It is lilting and graceful, moving through the air the way the dolphins move through the water. I was very affected at the end of this film.