Just saw it the other day.. I was talking with the local shop owner before the movie started at the local theater. The shop was doing a promotion thing to get OW students, and they were setting up right at the theater so the people could sign up as they were walking out. The movie started on a friday I believe, and the shop got 0 customers for the weekend.
The think I couldn't get my head around was... why the heck would PADI want to use such a movie to promote diving? It seemed to me that the movie showed reasons NOT to dive, like sharks and all sorts of bizarre accidents.. The movie tends to lean towards "treasure hunting" also, and not really diving.
The other thing is though, I can't blame the makers of the film for throwing in "insta-plotpoints" like sharks and such, because visually, diving isn't too exciting. It's one of those things where the experience is much more exciting than watching it, ya know? So to make it visually stunning, they need physical things that are exciting.. sharks! Otherwise we'd have a film of divers just enjoying great viz and checking out a bunch of colorful fish.. and plus everything is in slow motion because it's under water. (no visual dilemma) Great for discovery channel, not really silverscreen material.