Since sailing is a huge part of Zac Efron's new movie Charlie St. Cloud, we knew there were going to be plenty of sexy shirtless shots of the 24-year-old hunk in and out of the water!

We got some clips of Zac shooting some scenes in a tank, and we're ab-solutely loving it! The movie opens in two days, and we're definitely excited to see Zac take on a more mature role.