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Artwork of the Jammyfish enemy from Super Mario Galaxy 2.
Artwork of a Jammyfish from Super Mario Galaxy 2
First appearance Super Mario Galaxy (2007)
Latest appearance Super Mario 3D All-Stars (2020)
Subject origin Jellyfish
Jammyfish in the Deep Dark Galaxy

Jammyfish[1] (originally referred to as jellyfish in a general sense by Prima Games)[2] are underwater jellyfish enemies in the Super Mario Galaxy games. In the first Super Mario Galaxy, they are found in underground lakes in the Bigmouth Galaxy and Deep Dark Galaxy. Schools made up of four Jammyfish swim in vertical rings. Isolated Jammyfish passively suspend themselves in water and pulsate their bodies. Direct contact depletes one bar from Mario's (or Luigi's) Life Meter. In Super Mario Galaxy 2, they appear in Cosmic Cove Galaxy. They do not form schools in this game, but individual Jammyfish behave similarly by swimming in rings, or back and forth. They can be defeated with either a spin or a Koopa Shell and give a coin when defeated. They do not actively pursue Mario. Giant versions called Jam-o'-Wars also appear in these games and require two strikes to defeat.


Additional names[edit]

Internal names[edit]

Game File Name Meaning

Super Mario Galaxy
Super Mario Galaxy 2
ObjectData/Jellyfish.arc Jellyfish -
Super Mario Galaxy
Super Mario Galaxy 2
クラゲ (Kurage) Jellyfish

Names in other languages[edit]

Language Name Meaning
Japanese ユラリ[3]
A Japanese term meaning "swinging repeatedly"
French Médusie Derived from "méduse" (jellyfish)
German Qualle Jellyfish
Italian Medusilla L'il Jellyfish
Spanish (NOE) Aguamala Jellyfish


  1. ^ Browne, Catherine. Super Mario Galaxy 2 PRIMA Official Game Guide. Page 27.
  2. ^ Black, Fletcher. Super Mario Galaxy PRIMA Official Game Guide. Pages 213 and 259.
  3. ^ Shogakukan. 2015. Super Mario Bros. Hyakka: Nintendo Kōshiki Guidebook, pages 128 and 161.