Zombi 2
Speaking of hungry sea creatures, nothing says “tropical fun gone wrong” like a day of diving that features a close encounter with a shark… followed by a close encounter with a zombie that’s just hanging out underwater. Of course, nothing says “tropical fun gone so, so right” like the fact that the shark and the zombie then proceed to fight each other in one of the scenes that’s made Lucio Fulci’s 1979 in-name-only follow-up to George A. Romero’s Dawn of the Dead an absolutely legendary entry in the Italian horror genre.