Gravity Falls: Season 1, Episode 15
1 - 15: The Deep End
Mabel befriends a cute merman who gets trapped in the deep end of a public swimming pool. Meanwhile, Dipper volunteers at the pool so he can work alongside of Wendy.
Mabel befriends a cute merman who gets trapped in the deep end of a public swimming pool. Meanwhile, Dipper volunteers at the pool so he can work alongside of Wendy.