Gravity Falls Season 1 Episode 15
Overview
When Mabel befriends a cute merman trapped in the public pool, she’s determined to help him out. Meanwhile, Dipper decides to volunteer as a lifeguard to see Wendy.
Director: Aaron Springer, Joe Pitt
Guest Star: Dee Bradley Baker, Gregg Turkington, Keith Ferguson, Kevin Michael Richardson, Matt Chapman, Mike Rianda, Thurop Van Orman, Will Forte