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- The film's entire premise may count: two sea monster boys risking life and limb pretending to be humans in a town known for killing their species. One wrong move, one stray splash of water, and it's all over for them. And they come very close numerous times in revealing themselves, and who knows the worst that could happen...
- Alberto's earlier thievery on the fishing boat at night can come off as quite creepy, even knowing he's up to no harm. From the fishermen's perspective they only catch brief glimpses of something in the dark water, circling them, its intentions unknown, and they quickly flee the scene fearing the worst without getting a good look at just exactly what was after them.
- For the brief time Uncle Ugo appears, his overall appearance is unsettling due to the fact that his transparent body shows his organs. Then there's a moment where he freezes up while talking to Luca and Luca's father has him punch his uncle's heart hard enough to get it working again. And with his complaints that there is too much oxygen on the surface, one can only imagine what kind of life awaits Luca down in the dark abyss.
- Alberto revealing his sea monster form to Giulia for the first time comes off as very ominous. It's played off as a moment of betrayal where Alberto tries to prove that humans can't accept them, but him then rising out of the water backlit by the sun makes him look downright menacing.
- Ercole's attack on Luca and Alberto in front of the Vespa shop is disturbing to watch. In the dead of night, he first throws a harpoon at them to get their attention, then he has Guido and Ciccio pin Alberto to the wall while he gut-punches him. It's an unpleasant display of Ercole's Bully Brutality and shows who is the true monster.Ercole: I want to make myself very clear; this is my town, number ONE! (he socks Alberto in the gut as he says the last word) And number two, I don't want you in it.
- The climax has Ercole suffering a Villainous Breakdown and chasing after the now-transformed Luca and Alberto, hellbent on killing them after the latter makes off with the former. This turns him from a mere obnoxious bully to a downright sociopathic monster who will do anything for his own gain. Worse, Luca and Alberto cannot rely on anyone's help (with the fortunate exception of Giulia, who is chasing after Ercole to stop him) as they are perceived as The Dreaded by the townsfolk.
- This line by Ercole also qualifies:Ercole: You should've left when I told you. Now, I GOTTA KILL SOME SEA MONSTERS!
- This line by Ercole also qualifies:
