In the golden lightning of the sunken sun

They are trapped on a beach that is aging people at rapid rate. 60 minutes is 2 years, so you age almost 50 years in one day. Not a particularly good spot to spend your vacation. But you can't get out either. You can't swim or walk out. You try, you pass out. Quite a deliciously horrifying story and a few rather breath-taking and clever momets in it too, but too much to chew on. Bunch of shit actors to boot. Directed by M. Night Shyamalan.