Some people have reviewed it as being geared toward idiots or children. Others have complained about the narration and the soundtrack. They are all correct.
I am guessing that this was originally developed for the Imax market, which explains it's juvenile slant. It seems that everything of this nature in the US has been dumbed down for the kiddies...go to the Smithsonian and see the exhibits hosted by Elmo if you don't believe me. I think the last guy that tried to aim his work toward an adult audience was Jacques Cousteau.
The narration is like some kind of corny Speedy Gonzales on heroin, slow and deliberate accent and puntuation wavering between an attempt at real science and anthropomorphizing the situations. Overall it comes off as just pathetic.
Add to that the ridiculous music track trying to build some kind of false tension and, well, it is what it is.
The photography is pretty, and, as a biologist who has worked in the Sea of Cortes since 1979 it does capture it nicely in a very brief and superficial way.
I stick by my first impression...turn the sound off, put on some music that you enjoy, prepare yourself your favorite adult beverage or herbal smoke, and enjoy it for what it is.