View the Gallery / 41 Photos »

Showing off those biceps he’s worked so hard for, HSM star Zac Efron was stone-faced as he and his co-stars from the film took a boat ride in Sydney, Australia at Circular Quay Wharf.

The heartthrob (whose been officially granted that status by Leonardo DiCaprio) was flanked by his girlfriend Vanessa Hudgens and buddy Ashley Tisdale.

The kids are in town promoting the premiere of their big screen movie High Musical 3: Senior Year and quite frankly, they couldn’t look more excited to be here. Unless they were asleep.

Click on any photo to see the 40+ gallery of Zac Efron, Ashley Tisdale and Vanessa Hudgens.