Not to be confused with Friend.

Blue jellyfish are a rare species of jellyfish that are known for being difficult to catch. Jellyfish Fields is home to only one blue jellyfish, Friend, formerly known as "No-Name." Blue jellyfish also appear in some video games.


Blue jellyfish are very rare. They are known to be very agile and stealthy, and they create blue jelly instead of purple or pink like the normal jellyfish. In "Jellyfish Hunter," SpongeBob captures the only blue jellyfish in all of Jellyfish Fields and names him "Friend."

Role in series

"Jellyfish Hunter"

SpongeBob tries to capture one at the start of the episode but fails. Later, the same blue jellyfish follows SpongeBob to his house, captures him, and takes him to Mr. Krabs' factory. The blue jellyfish and SpongeBob stop Mr. Krabs from using the jellyfish SpongeBob captured for his own good and sets all the jellyfish free. The blue jellyfish then enters SpongeBob's net, and SpongeBob calls the blue jellyfish "Friend."

"Squirrel Jelly"

Friend can be seen among many other jellyfish.

Role in video games

Battle for Bikini Bottom/Battle for Bikini Bottom - Rehydrated

Blue jellyfish in the original console game.

In the console versions of the original game and all versions of Rehydrated, blue jellyfish appear only in Jellyfish Fields. They are more dangerous than ordinary jellyfish.

In the original console game, blue jellyfish must be hit twice to defeat them, as opposed to ordinary jellyfish which only need one hit.

In Rehydrated, blue jellyfish only need to be hit once, but their radius of stinging the player is larger compared to ordinary jellyfish.

SpongeBob's Atlantis SquarePantis

Blue jellyfish appear as one of many color variations of jellyfish in the Nintendo DS version.


  • Blue jellyfish do exist in real life, also referred to as "bluefire jellyfish," scientifically known as "Cyanea lamackarii."
  • SpongeBob possibly does not eat jelly from a blue jellyfish.
Battle for Bikini Bottom Enemies (VE)
Standard: JellyfishBlue jellyfishFodderHam-MerTar-TarChomp-BotG-LoveChuckMonsoonBomb-BotSleepy-TimeArfArf DawgBZZT-BotTubeletSlick
Bosses: King JellyfishRobo-SandyPrawnRobo-PatrickFlying DutchmanSpongeBot SteelPantsRobo-PlanktonRobo-Squidward
Jellyfish (VE)

JellyfishFriendBig LennyQueen jellyfishKing jellyfishBlue jellyfishJelliensJellien LeaderDragon jellyfishBlack jellyfishSparkyGreen jellyfishGhost jellyfishBlue-Crested BlasterSpeckled SquirterDiamond JellyfishGlowing Three-SpotDoodle JellyfishMagma jellyfishSteel jellyfishGolden jellyfishGold-Throated SingerTwo-Fisted JumperPink-Tuft Finger StingerGiant white jellyfishLavender jellyfishFive-Spotted jellyfishGolden JellyfishGray jellyfishRed jellyfish (Revenge of the Flying Dutchman)Ol' BessyJellybeeJelly Buzz-SawsGiant jellyfishFirejellies

Atlantis SquarePantis (VE)

Characters:Lord Royal HighnessAtlantean citizensCaptain of the Sea Ship AtlantisAtlantean RobotsRobot touristsRed AtlanteanNandoAggressive Case of the SnifflesOrange guardBubble SpongeBobVultureDave (cave)GermsNorblock FiveMagenta thugGreen jellyfishGhost jellyfishBlack jellyfishMagma jellyfishDiamond JellyfishSteel JellyfishRoyal Guard Commander

Locations:AtlantisMuseum of AtlantisMuJellyfish FieldsEncinoGasMusic StationNickelodeon Animation StudioBikini Bottom MuseumBikini BottomKelp ForestThe Bubble RoomThe Science Room

Objects:Plankton's tankAtlantean amuletSea Ship AtlantisOldest living bubbleGolden spatulaHooksBubble Collector 2000Frampton Comes AliveSquidward tikiCanned BreadAnchor ArmsJellyfish netSquidward's clarinet

Songs: The Bubble SongFueling the BusMr. Krabs' songSandy's songSquidward's songPlankton's songGoodbye, AtlantisBack in Encino

Shorts: Are We There Yet?Beware Flying JellyfishDocumenting Our Road Trip

Miscellaneous: DVDBookVideo gameMobile gameOnline gameSpongeBob's Director's CommentaryMy Trip to Atlantis - by SpongeBob SquarePantsSpongeBob's Atlantis SquarePantis SquareOffInside the SpongeBob Animation StudiosBehind the PantisOn the Road AgainFrom the Beginning, Pt.2The Best 200 Episodes EverSpongeBob SquarePants Specials Collection, Vol. 1The First 100 EpisodesThe Complete Fifth SeasonSeason 5 Volume 2Blitz GamesAltronSpongeBob Z-A CountdownSwapBob SpareFaceHappiness to Go!Best Bikini Bottom Stories Ever!The SpongeBob Super Square Collection

Community content is available under CC-BY-SA unless otherwise noted.