Jellyfish are a species of aquatic animal that appears in the real world. We see a few Jellyfish throughout the duration of the Adventure Time series.
Trivia[]
- Unlike Jellyfish in the real world, Jellyfish in the Adventure Time series appear to have faces and even brains.
- Also unlike Jellyfish in the real world, Jellyfish in the series appear to be able to thrive on land.