And you would assume all mermaids to be nice and friendly....
- The mermaids. Especially when you can hear the terrified screams of Barbossa's men as the mermaids slaughter them. Especially when the one of them convinces the hapless Scrum to poke his head underwater, by acting like she wants to seduce him. And once he does, her beautiful face quickly becomes scary and menacing, revealing her TRUE intention. And Scrum's horrified reaction only makes it worse.
- The scene where one mermaid is singing and the others are swimming underneath the boat is very suspenseful and quite reminiscent of Jaws.
- At a later point in the film, Barbossa and his crew watch from a distance to see the mermaids SINK a ship. You can hear the screams of the crew. How quickly they did it calls to mind the Kraken from the second film.
- Blackbeard being seemingly flayed alive by the waterspout as his skeletal hand reaches out to the horrified Angelica. Not to mention the fact that we can see his blood while his body is being torn apart. One can also see his guts for about a second, leaving his body only to be torn to pieces.
- The results of the Queen Anne's Revenge's riggings coming to life under Blackbeard's power and snatching up the would-be mutineers—the men hanging from the now-tangled rigging like flies caught in a spider's web.
- Also, that scary Cold Ham speech Blackbeard delivers right before stringing the mutineers up, as he emerges from his cabin with those famous smoking ropes in his hair.
Blackbeard: Gentlemen. (calmly takes a shot from his bottle before throwing it onto the deck at Jack's feet, breaking it) I be placed in a bewilderment. There I were... resting. And upon a sudden, I hear an ungodly row upon deck. (he strokes the hilt of his sword, making the ship's ropes slide across the deck like snakes) Sailors abandoning their posts without orders, without leave. Men before the mast... taking the ship for themselves. (to Angelica) What be that, First Mate?
Angelica: Mutiny, Captain.
Blackbeard: (raising a hand to his ear) Again?
Angelica: Mutiny!
Blackbeard: Aye... mutiny. And what fate befalls mutineers? (draws his sword from its sheath) Now, we know the answer to that, do we not? Mutineers... HANG!! (he thrust his sword up into the air and the mutineers start getting snared) - The cook's Family-Unfriendly Death where he gets killed by the flamethrowers on Blackbeard's ship. Twice.
- Barbossa's story about how Blackbeard attacked the Black Pearl. Given what we saw when Blackbeared dealt with the mutineers, we can assume that the attack on the Pearl was even more horrifying. Especially as Barbossa explains how it led him to a Life-or-Limb Decision...
- Plus you can hear screams during the story.
- On Ponce de Leon's ship, Jack attempts to take the map his skeletal corpse was holding. Then the skeleton turns to look at Jack. Wisely, Barbossa and Jack decide to leave the map alone.
