Jaws 3-D (1983)

Years after the tragic events of the first Jaws, Martin Brody’s sons face a new nightmare inside a state-of-the-art water park in Florida, where a huge white shark has managed to get in, spreading panic among tourists.
Twenty-two minutes into the film, Lea Thompson strips down to a skimpy bikini and runs to dive into the sea with a friend. It is nighttime, but the moon illuminates their bodies. Shortly after, in addition to the moon, the two are surprised by the beam of a flashlight, which envelops them as they stand hugging each other, waist-deep in the water.