Look for the "Pool Rules" sign, which includes absurd restrictions typical of the show's humor. 🏆 Themes
Mabel meets Mermando , a boy trapped in the pool's filter section. She discovers he is actually a merman and vows to help him escape to the open ocean.
The end credits cryptically feature the "Vigenère cipher" for the first time in the series. [S1E15] The Deep End
This episode introduces Mermando, who reappears in later episodes via Mabel’s scrapbook.
Episode Overview is the 15th episode of the first season of the Disney Channel animated series Gravity Falls . It originally aired on March 15, 2013. 🌊 Plot Summary Look for the "Pool Rules" sign, which includes
The intimidating antagonist of the episode who runs the pool like a drill sergeant.
The episode explores (Mabel giving up her "first kiss" to give Mermando CPR/oxygen) and the folly of obsession (Dipper’s pursuit of Wendy and Stan’s pursuit of the chair). The end credits cryptically feature the "Vigenère cipher"
A lonely, Spanish-accented merman who was accidentally caught and placed in the pool.