|The Cosmic Ocean|
|Season 4, Episode 9|
|Airdate||March 13, 2016|
|Prev. and Next|
The War for Dimension X
The Cosmic Ocean is the 9th episode of Season 4 and the 87th overall.
Exploring the deep dark waters of the cosmos.
The Turtles journey through an ocean-like area of space.
"You must hold onto hope. And with that hope, you must lead by example."
- The electrical seaweed, that Raph warned about, was referenced from an underwater level in the 1989 TMNT video game for the NES. Fugitoid's reference to how fast he could make it through (two minutes, twenty seconds) is the time limit given in that stage.
- The image Mikey thinks up in which he imagines what Cthugga would look like, is character art of the Archie version of Ray Fillet.
- The Cosmic Ocean of Varuna bears a strong resemblance to Otoh Gunga from the Star Wars franchise.