- Accidental Aesop: Like a lot of Attack of the Killer Whatever movies of its era, the film's stance seems to be that scientists are cold, aloof, unethical in their pursuit of progress, and shouldn't be tampering in God's domain. If not for the fact that McCallister takes all the blame and Franklin is absolved of all responsibility, it could easily have made a valid point about how profit-driven pharmaceutical companies drive research scientists to cut corners to get a product on the market faster under threat of having their funding cut off.
- Alas, Poor Scrappy: Susan realises her attempts to cure Alzheimer's were All for Nothing and she pulls a Heroic Sacrifice to ensure the death of the last shark.
- All There Is to Know About "The Crying Game": The most famous spoiler from this movie - Samuel L. Jackson getting eaten alive halfway through a Rousing Speech - isn't even that relevant to the plot, or the climax.
- Ensemble Dark Horse: LL Cool J's character Preacher spends most of the movie alone, separated from the main cast, who never even seem to remember he's there. This makes one wonder if he was even originally intended to be in the movie, but eventually he turns out to be a lot more intelligent and even more likable than the other characters. Apparently he was popular enough that the movie was rewritten to have him survive at the end.
- Hilarious in Hindsight: Sorta. The special effects company involved with making the animatronic sharks would create the shark animatronics (some of them even look identical) in Shark Night nearly twelve years later.
- Memetic Badass: The shark killed Jules Winfield, Mace Windu, Nick Fury and a boatload of badass muthafuckas that Samuel L. Jackson have ever played. Clearly it has had it with these muthafuckin' humans on this muthafuckin' film.
- Memetic Mutation: Pick any Samuel L. Jackson memes out there. Good. Now, pretend that the shark does just those memes with Sam as the victim this time. One of the most common ones is...
- "You just knocked us down to the bottom of the food chain!", said in response to the idea that sharks now have enhanced intelligence. Putting aside that we still possess abilities that they lack (tool-making etc), the fact remains that humans don't even form part of the aquatic food chain. And even if there's some kind of united food chain, are we really below rabbits?
- Susan describing how she had to keep telling her Alzheimers-afflicted father over and over again that his wife was dead, and watch him take the news as totally fresh every time. You just have to wonder if it ever once occurred to her to just lie about it.
- Narm Charm: "You ate my bird!" Simultaneously the most awesome and goofiest Pre-Mortem One-Liner ever.
- Retroactive Recognition: The team include The Punisher, Victoria Hand, Nick Fury and Dr. Selvig.
- The Scrappy: Susan. Test audiences hated her so much they were shouting "Die bitch!" during the screenings. Saffron Burrows' Dull Surprise performance doesn't help, making the character come off like The Sociopath. The studio went back and reshot the ending just to kill her off.
- So Bad, It's Good: A cast of highly gifted actors giving totally ridiculous performances + every shark movie cliche ever + the incredibly ridiculous death scenes = pure B-movie cheese.
- Signature Scene: Samuel L. Jackson getting munched by the shark mid-Rousing Speech.
- Special Effects Failure: Renny Harlin challenged audiences to notice when the mechanical sharks ended and the CGI ones began. Form a line, folks...
- Notably during the infamous scene of the shark grabbing Samuel L. Jackson, as the shark itself looks too rubbery and the way it grabs him seems to defy all known physics. Even the VFX team at Hammerhead Production admit to it having flaws.
- Surprisingly Improved Sequel: While Deep Blue Sea 2 is considered a failure by many, the second sequel, Deep Blue Sea 3 managed to get better reviews and has better than usual low budget special effects work.
- Take That, Scrappy!: Susan's death.
- Took the Bad Film Seriously: A review of the film said that it works because everyone isn't taking it seriously, making it quite fun. The exception is Saffron Burrows, who "behaves as it was an art film" (and unlike most of the examples here, gives a bad performance).
- Unintentionally Sympathetic: The All for Nothing ending was clearly intended to show how 'bad' Susan was for daring to successfully engineer a way to cure Alzheimer's Disease. What is really galling is that Susan is 100% correct - they could wipe out degenerative brain disease with this research. Alzheimer's is ultimately fatal, and affects an estimated 5million people in the US alone. But no, apparently we should cheer the death of the scientist that would have saved MILLIONS.
- Visual Effects of Awesome: That said, while the CGI is spotty at best, the animatronic sharks still look amazing even today.
- Watch It for the Meme: Okay, so how many of you are watching this for the chance of seeing a super badass shark that could kill Samuel L. Jackson??
YMMV / Deep Blue Sea