The Mermalair (also known as Sea Cave[1]) is the secret hideout of Mermaid Man and Barnacle Boy. It first appears in "Mermaid Man and Barnacle Boy II." The Mermalair holds a variety of weapons used by Mermaid Man and Barnacle Boy, including the Orb of Confusion.



Secret entrance

To enter the Mermalair, a secret switch must be pressed inside Shady Shoals rest home, and it will activate a secret door under the couch (much like the entrance to the secret lair of Darkwing Duck which involves a secret door under
Mermaid Man and Barnacle Boy II 027

Secret entrance

two recliners). A hole leads down to the lobby of the Mermalair.[2] SpongeBob SquarePants comics, it's accessible by charging full speed at a wall in the home.

There is another entrance, which is a cave like the batcave from the Batman series (most likely for their boat, Invisible Boatmobile, to get outside). Shady Shoals is located nearby a large cliff which marks the possible location of the cave.

The Mermalair is broken up into the following sections:

  • Mermalair Lobby - Entrance Area[2]
  • Mermalair Main Chamber - Security Computer, Funnel Machines, Tower of Power, and a leisure area for Mermaid Man and Barnacle Boy.[2]
  • Mermalair Security Tunnel - Tunnel leading to the Rolling Ball Room[2]
  • Rolling Ball Room[2]
  • Villain Containment Area - Where villains are locked up.[2]
  • Exit- Contains a door and the Invisible Boatmobile. The door first appeared in "Mermaid Man and Barnacle Boy III."

Cave entrance

The cave entrance of the Mermalair contains the Wall of Superhero Super Gadgetry.[3] This wall contains such gadgets as the Cosmic Ray, the AquaGlove, and the Death Grenade.

An additional tool is the Orb of ConfusionProlonged exposure to the Orb of Confusion will give its victim confusion. Another tool is the Tickle Belt (as seen in Mermaid Man and Barnacle Boy episode 17).[3]

Another room in this area of the Mermalair is where Man Ray was frozen in tartar sauce.[3]
Mermaid Man and Barnacle Boy III 030

Additional features include:

  • Tubes where the I.J.L.S.A member's costumes are contained in.[4]
  • A conference room with the I.J.L.S.A. Table[4]
  • Prawn's cell[2]
  • The Main computer (contains a fish inside).

Mermalair lobby

At the end of the hole at the entrance, the lobby of the Mermalair is the first room. It contains various obstacles to get to the main chamber.[2]

Mermalair main chamber

The Mermalair Main Chamber is found after the lobby. Inside, the Security Computer is present, in which it controls the security system. In addition, funnel machines and the Tower of Power control the power within the Mermalair. Finally, a leisure area, including a Television set, is where Mermaid Man and Barnacle Boy rest.[2]

Security system

The Mermalair has a large security system which Mermaid Man and Barnacle Boy use to keep the villains in the villain chamber locked up. In order to shut the whole system down, four buttons must be pressed, along with the main shut-down button, at the main computer.[2]

The Wall of Weapons

  • The Super Walkie Talkies
    031a - Mermaid Man and Barnacle Boy III (046)

    The Wall of Weapons.

  • The Killer Paddle Ball
  • The Fish-Bat
  • The Radio-Powered Satellite Shoe
  • The Infinity Anchor
  • The Mermarang
  • The Power Goggles
  • The Cosmic Ray
  • Death Ray
  • The D.I.Y Hammer
  • The Aqua Glove


  • "The String"- The Mermalair was presumably destroyed when SpongeBob unraveled all of Bikini Bottom and the Milky Way with the string.


  1. ^ "as heard in "Mermaid Man and Barnacle Boy"
  2. ^ a b c d e f g h i j as seen in the ESB: Battle for Bikini Bottom video game.
  3. ^ a b c as seen in the episode "Mermaid Man and Barnacle Boy III"
  4. ^ a b as seen in the episode "Mermaid Man and Barnacle Boy V"
Locations (VE)


Bikini Bottom (Dead Eye GulchBikini BottomshirePlanktopolis) • EncinoRock BottomBottom's Up!Tentacle AcresNew Kelp CityBass VegasDullsvilleFar-Out-VilleUkulele BottomAtlantisShell CityBurbank

Bikini Bottom Areas

Bikini AtollJellyfish FieldsGoo Lagoon (Mussel Beach) • Kelp ForestSand MountainIndustrial ParkSulfur FieldsDutchman's TriangleDavy Jones' lockerMake-Out ReefMt. BikiniMt. Bikini BottomBikini Bottom Tar PitsMount Climb-up-and-Fall-offRippers' ReefBrain Coral FieldsThe County Line

Bikini Bottom Residence

SpongeBob's housePatrick's houseSquidward's houseMr. Krabs and Pearl's houseSandy's treedomeMrs. Puff's houseFlying Dutchman's shipHarold and Margaret SquarePants' houseGrandma SquarePants' houseBottomite housesSquilliam's towerMrs. Tentacles' houseBetsy Krabs' houseBubble Buddy's houseDoodleBob's houseOld Man Jenkins' houseNorma Rechid's houseBlue SquarePants' houseBlackJack's houseFast mansionMs. Mildred's mansionWidow Duncan's house

Bikini Bottom Establishments

Krusty Krab (Rusty KrabKrabby O'Monday'sKrusty Krab 2) • Chum BucketMrs. Puff's Boating SchoolBarg'N-MartGoofy Goober's Ice Cream Party BoatReef CinemaShady Shoals Rest HomeMermalairSea NeedleRecreation CenterBikini Bottom Recreation CenterBikini Bottom SchoolBikini Bottom High SchoolBikini Bottom UniversityBikini Bottom MallBikini Bottom Post OfficeBank of Bikini Bottom BankBikini Bottom MintBikini Bottom JailBikini Bottom Police DepartmentPolice StationBikini Bottom Fire DepartmentBikini Bottom HospitalBikini Bottom AirportBikini Bottom LibraryBikini Bottom SupermarketBikini Bottom BakeryBikini Bottom GarbageBikini Bottom MoversFirst Nautical BankBankCourt HouseBikini RealtyHotelLarry's GymGymThe DumpPoseidon Elementary SchoolAdult Learning CenterBottom of the Hill CommunityFlower archBikini Bottom Zoo (Oyster Stadium) • Bikini Bottom MuseumBikini Bottom Museum of BoatingHook MuseumFry Cook MuseumStuffGrab-it MartDinerJuice BarFancy!KelpshakePizza CastleShell ShackFlabby Patty ShackSea Chicken ShackRusty's Rib EyeStinky BurgersCemeteryFloater's CemeteryKRUMGlove World!Glove UniverseCoral CarnivalValentine's Day CarnivalFun ArcadeBikini Bottom ArcadeToy BarrelIce CreamIce CreamBunny BunsThe Wash!Sizzling Spring SaunaFancy SpringsPamper IslandSunny Shore ResortsSuper Mega Mall WorldBikini Bottom Outskirts Outlet Mega-MallBassCar Baytona 400PlaygroundPalace of PranksMagic ShopNear Mint Comic BooksBigshot RecordsAngry Jack's Shell EmporiumJewelry StoreFlower ShopPerfume ShoppeNoses 'n ThingsTom's TooleryHatsWigs & HairpiecesBikini Bottom Folk VillageSeashell ParkSnail ParkPet ParkFish Hooks ParkFast Food ColiseumMedieval MomentsThe Main DrainTough TavernThe Salty SpitoonWeenie Hut JuniorsSuper Weenie Hut JuniorsWeenie Hut GeneralBikini Bottom Pillow FoundryMattress DiscountMattresses & Then SomeRest HomeGrandma's Tea HouseOld Man Jenkins' barnShelly SuperhighwayKing Neptune's castle

Non-Bikini Bottom Locations

TexasMoonPoseidomeKarate IslandInferno IslandSun-N-Fun IslandBikini Bottom TriangleGranny's houseTea ParlorNowhereGreat Barrier ReefCharted Caverns of LemuriaThe Remote IslandKahmamoku CoveSandy's islandIsland in the SkyServis StashunThug TugIce CreamThe TrenchWinchell ApartmentsVats of Acid "R" UsPatchy's houseDon's Import Store & DelicatessenThe Poop DeckNickelodeon Animation StudioNowhereDoodle DimensionFly of DespairHorned Forest

Video Game Locations

Goo Lagoon PierVillain Containment System AreaRock Bottom MuseumTrench of Advanced DarknessSki LodgeGuppy MoundFlounder HillRevenge of the bride of Plankton's other BrainKelp SwampKelp CavesKelp VinesFlying Dutchman's Graveyard (Graveyard of Ships) • SpongeBob's dreamPatrick's DreamBikinos BottosDoodle Patrick's houseSquid Doodle's houseDoodle Grandma SquarePants' houseUptown Bikini BottomBikini Bottom OutskirtsRay's Organic Tanning SalonWSEA TVRusty AnchorMarlin's CaveSardine's SundriesOxygen SpringsWaverly HillsCarlton Ritts' houseCowfish Craig's shackSublime SeafoodsNeptune's ParadiseDead LandsUndersea DesertKelpazoic JungleSand StadiumTentacle Acres Cocoa ShopShipwreck ReefConstruction siteHigh Rise apartmentsChum WorldMonster CavernsMount TritonWhelk-MartDriving You Nuts!SpongeBob's pineapple gardenSquirrel Museum of NutsMuShip GraveyardSeed ShopSpice ShackTreat Shop • • The Center of the EarthSix Clams Adventure LandOkey Dokey CorralHotel Deep SixFin LockerHotel Deep SixThe Mysterious Old Abandoned Factory

Mermaid Man and Barnacle Boy (VE)
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