O.K., so typically, movies that involve diving are more about the romantic adventure of diving,than the technical accuracy of the sport. Having said that, these are my top five picks. Lets just say that these movies are more of a guilty pleasure!
5.Into the Blue(2005); Jessica Alba,Paul Walker. A group of divers discover a crashed plane containing drugs. Well, some of these movies really are just eye candy.
4.Fool's Gold(2008);Kate Hudson,Matthew McConaughey,Treasure,romantic adventure on the high seas, and diving. A bit zany,at times, but good for the pure escapism of it all.
3.After the Sunset(2004);Pierce Brosnan, Selma Hyak, Woody Harrleson. More of a comedy about retired jewel thieves. Nice scenery, and of course,diving.
2.The Deep(1977); Jacqueline Bissett. Kind of a tie between this and Thunderball, for me! This one was shot on the RMS Rhone,so, brownie points for authenticity.
1. Thunderball(1965);Sean Connery as James Bond. One of the best. The dive scenes are pretty improbable,what with the knife fights,and all. Still, just good fun. And you can actually dive some of these sights,in Nassau!
These were just the movies that came instantly to mind, when the subject came up. I am guessing that you can come up with a few more!