Puts the suspend in suspense. Reminds me a little of Knife in the Water in that it is languorous, watery, slippery, and perpetually on edge. And speaking of monstrous men...
Also I was vaguely reminded of The Wonders because they share a coming of age element and a Mediterranean sunny beauty, and turns out they share a cinematographer! Definitely making a note of Hélène Louvart, who is the common thread in a many of the arthouse gems of the past decade.