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Jellybeams are a type of jellyfish enemies introduced in New Super Mario Bros. Wii. Their name is a pun on jelly bean, as well as a portmanteau of "jellyfish" and "beam". Their appearance is slightly reminiscent of Jelectro from Super Mario Bros. 3.
Jellybeams reappear in New Super Mario Bros. U acting in the same manner as in New Super Mario Bros. Wii, and appear only in Deepsea Ruins of Soda Jungle with Bulbers, Fish Bones and Circling Boo Buddies.
Despite helping Mario to see underwater, they can also hurt him if Mario touches them. Jellybeams can be defeated with fireballs or a Starman. Mario can also freeze them, causing them to stop moving, but they will continue to illuminate the water. Their movements can be compared to a Thwomp, although rather than slamming down on the ground when Mario approaches, they automatically move up and down slowly.
Names in other languages