If current server doesn't work please try other servers below.
Season 1 - Jun. 15, 2012
Season 2 - Aug. 01, 2014
Gravity Falls Season 1 Episode 15
HD
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.