If you can get HULA where you live, this 40 minute film, on the origins of life on Earth, is a must see. Much of the development, time wise, takes place in the oceans, and I swear it's the best underwater photography I've ever seen.
They do interrupt the film with a couple of 15 second commercials, but that was just a chance to close my jaw.
Oh, it's got sex and violence too.
http://www.hulu.com/watch/63314/origins-of-life