Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Nightmare Fuel: Jaws
Suddenly, that "bigger boat" sounds like a terrific idea.
A movie about a shark stalking its prey, devouring them piece by piece, with nary a noise nor expression. You bet your ass it has its scary moments. By the way, yes, the shark head really was that big.
Everything after Quint's death, imagine, being alone on the mast of a sinking boat, and knowing the only thing saving you from being devoured alive is a one in a million shot.
Jaws is indeed scary, even with all the Special Effect Failure. The main theme is scary, and two scenes in particular are "jumping" ones (when Richard Dreyfuss is examining a boat and a dead man comes out of it, and when Roy Scheider is throwing meat at the sea and the shark appears without warning).
The scene where Hooper is in the cage, watching the shark slowly inch closer and closer. It passes the cage, seeming not to care. Hooper readies his spear. The shark slams onto the cage from the back, just behind Hooper.
One of the scariest scenes is the zoom down the beach - the ordinary beach, any beach, your beach - to the sight of a great white tearing a little kid to pieces in the shallows.
Hey, the posters scare people shitless. The second one in particular.
The search for Ben Gardner aboard his boat is horrifying, as well as when the man in the boat that capsizes is dragged under water in a gout of blood.
The scene in which the shark begins ramming the side of the Orca was distinctly frightening.
Sharks on the whole are misunderstood and nonviolent creatures. However, Jaws was based on one very atypical shark in real life that brutally killed four people. So a creature whose species isn't normally given to murder goes on a killing spree... wait, doesn't that make it even WORSE?
Quint describing the Indianapolis disaster. Because that really happened.One of the most chilling scenes and it doesn't involve any action at all.
Also, after he told his bonechilling story you can hear a haunting sound. Quint explains it's just a whale, but it's still creepy.
Quint slowly being killed by the shark is both nauseating and horrifying.
To specify, the experienced shark-hunter slowly slides down the length of his boat, incapable of preventing his descent Seeing your death coming and being completely unable to stop it? *shudder*
When the dog disappears, with the very strong implication that he's become shark food. It can be very unpleasant for people who really like dogs. It doesn't help that right after the above happens, there's the attack on Alex Kitner.
There's perhaps the most distressing thing about the implied death of the dog. NO-ONE NOTICED. As horrible a thought as it might sound (especially to pet lovers), if someone had actually sighted that the dog had been taken by the shark, it would have given them some warning. And young Alex might have been spared his fate as a result. But no. A silent predator sneaks in, takes someone's cherished pet, and then takes someone's son.
After poor Quint was killed, unlike the previous attacks in the first film where the shark leaves you alone for awhile, the shark, out of nowhere, rams through the side of the sinking boat at Brody very unexpectedly. YIKES!
The opening scene of the film where the girl in the water is killed. You never SEE the shark. Only its perspective, her reaction and the amazing score by John Williams. Hearing her scream, struggle to breath and try to seek refuge on the buoy makes you imagine what the shark is doing to her under the surface...
What makes it even worse is, as she's screaming for help, the guy she was going to go skinny dipping with is falling asleep on the shore and completely unaware of what's happening to her. Granted there's not a whole lot he could have done, but it's still horrible.
How about this lost scene? In it, the man from the boat in the estuary is being dragged along the surface of the water by the shark as it goes after Brody's son Michael. We see Michael being pushed up against the dying man and shoved around in the water and it seems like the shark is trying to find a way to fit Michael in its mouth too. Then, bleeding out in the shark's mouth, the poor guy manages to push Michael out of harm's way before being dragged underwater and ripped to pieces. Spielberg supposedly cut the scene for being too violent and horrifying, and it's not hard to see why.
The bit where the two fishermen try to catch the shark. The dock they're on collapses, dragging one of the men out to sea. As he shakes himself loose and begins to swim back to shore, the piece of dock that the shark is still attached to stops and turns around and begins pursuing him. What makes this moment so terrifying is that at this point the theme music kicks in full force. Only his friend's constant encouragement of "Take my word for it, don't look back! Swim, Charlie, swim!" saves his life. You can almost sense the shark's disappointment that his prey has eluded him.