The Sand (movie, 2015)

Just when you thought it was safe to go back in the water again, you can’t even get across the sand! BLOOD BEACH meets SPRING BREAKERS in an ace monster mash-up of smart nostalgia and up-to-the-minute visual effects. After an all-night graduation beach party, a group of hung-over students wake up under blazing sun to find their numbers somewhat depleted. An enormous alien creature has burrowed down deep and anyone foolish enough to make contact with the sand finds themselves at the mercy of a sea of flesh-eating tentacles. Will they ever be able to escape its carnivorous clutches?