In "The Shallows," a surfer played by Blake Lively thinks she's finally found paradise -- but really she's stumbled into a giant shark's buffet. The new trailer for the thriller finds Lively ("Gossip Girl") stranded on a rock just a short distance from shore, with just one shark swimming in her way. As the tagline indicates, no, this is decidedly not "just another day at the beach."

Directed by Jaume Collet-Serra (“Orphan,” “Run All Night”) from a script by Anthony Jaswinski, "The Shallows" swims into theaters on June 29.