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The Reef used to be a frequently used structure, specifically made for the use of Pearl creation, repair, and modification. The structure is equipped with an artificial intelligence named Shell, which assists the user in activating the building's functions. It was later deactivated by Steven and Mega Pearl within the episode in "Volleyball".


The Reef has an ocean motif. The building is shaped like a clamshell and it is located on an island in the middle of an ocean. Outside the building's door is a bridge, that connects the island to an unknown piece of land. On the inside, it includes, but is not limited to, an activation room (as shown when Steven places his hand on a Gem pedestal), a Pearl "remodeling" room, and a Pearl repair room.


Shell, The Reef's built-in A.I., is a helpful guide that makes suggestions as visitors travel throughout the structure. After Pearl and Pink Pearl's argument and Steven's outburst, Shell decides that the two Pearls are far too "broken" to be repaired and require rejuvenation, trapping them in a shell and sending shockwaves throughout their bodies. This leads to the two having a heart-to-heart and Pink Pearl acknowledging her trauma; this combined with the attempted rejuvenation causes them to fuse into Mega Pearl. Shell is voiced by Deedee Magno Hall.


Long Ago[]

The Reef was created a long time ago in order to create Pearls, in an unknown process. It was used for many years, creating an unknown amount of Pearls. After the beginning of Era 3 however, it was shut down due to Pearls no longer being made.


The Reef made its first and only appearance, acting as the main setting of the episode. It is later destroyed by Mega Pearl with Steven's help.


  • Although it is never stated within the show, Rebecca Sugar has stated that White Diamond is involved with the creation of Pearls.[1] 
    • It was later revealed that the Reef was created as part of White Diamond's fifth conquered planet.[2]
  • The clamshell-like design of the building and the fact that it is surrounded by ocean mirrors how Pearls are created in real life (from oysters and other mollusks found in the ocean).
  • The seemingly peaceful A.I. that turns out to be "evil and murderous" in the end, along with the walls forming in the objectification hallway and Mega Pearl having to create a series of "holes" on said walls for Steven to pass through, maybe a reference to the video game Portal. This is further evidenced by the fact that Shell's name is extremely similar to that of the protagonist of Portal, Chell.
  • The overall interior design of the building is a homage to the Art Nouveau style of architecture, which was the prevailing movement of applied arts during the late 1800s to 1910s and is characterized by the use of organic forms, most notably sinuous lines (also known as Whiplash Curves) to create elaborate and intricate designs that mimic nature. Specifically, the interior design of the building takes inspiration from Casa Batlló, a residential apartment designed by Catalan Modernisme architect Antoni Gaudí.
  • The planet the Reef is located nearby may possibly be Saturn, as Jupiter is seen just before arrival at the Reef, and a gas giant with a large ring can be seen in the background. Additionally, this could mean that the "planet" the Reef is located on could be Titan, one of Saturn's moons which has an ocean. 


New Gallery

Click to view the gallery for The Reef.


ve Locations
Beach City Businesses: Aqua-MexicanBeach City Funland (Funland ArcadeWiener in Hand/Hot Dogs) • Beach Citywalk FriesBeach City WoodsBig DonutBuddwick Public LibraryClassic ThymeCrab ShackDanny'sFish Stew PizzaIt's a WashMini-Golf CourseSpacetriesSuitcase Sam'sT-Shirt ShopU-Stor

Residences: The BarnBarriga ResidenceCrystal Temple (Beach House) • Miller Residence (Sadie's Room) • Onion's House
Other: Abandoned WarehouseBeach City PierBeach City StageBeach City WoodsBrooding HillDead Man's MouthLighthouseMayor's OfficeUnderwater SwordWater Tower

Crystal Temple and the Beach House Amethyst's ChamberAmethyst's RoomBurning RoomCrystal HeartGarnet's ChamberPearl's ChamberPearl's RoomRose's RoomSteven's BathroomSteven's ConservatorySteven's RoomSardonyx's Room
Earth Locations Africa: Ghana (Sahara desert)

Asia: China • India • Japan • Korea • New Australia • New Zealand • Philippines
Europe: Albania • Bulgaria • Greece • Italy • Middle East • Spain • Scandinavian Peninsula (Norway) • Russia (Siberia (Tunguska Sea))
Americas: North America: (The Great North (Newfoundland) • Greenland)
USA: Arizona • California • Delmarva (Charm CityOcean Town • Wilmington) • Empire State (Empire City (Le Hotel)) • Idaho • Georgia • Florida Island • Jersey • Kansas (Hollywood • University of Jayhawk) • Keystone (Keystone MotelThe Best Diner in the World) • Nevada • West Keystone (Showne) • Utah
South America (Brazil)
Antarctica: South Pole
Other: Cram School • Cool RanchHospitalMaheswaran Residence • Space Camp • Starlight Roller Rink

Space Locations Earth • Gem HomeworldJungle MoonKlavius 7Kyanite ColonyPink Diamond's ZooUpsilon 9Unknown Ocean planetUnknown Beach planetUnknown City planetUnknown Jungle planet
Gem Locations Earth: Ancient Gem Colony ShipAncient Sky ArenaBeta KindergartenCloud ArenaCommunication HubDesert (Rose's Landfill) • Flower MeadowForgeGalaxy WarpGem BattlefieldGeodeGreat North • Harmony Core Temples (Harmony Core Temple • Two Harmony Core Temples near the small island • Antarctic Harmony Core Temple near the South Pole) • Ice CavernKindergartens (BetaPrime) • Little HomeworldLunar Sea SpireMask IslandPearl's ArenaPearl's TreePrime Kindergarten (Prime Kindergarten Control Room) • Pyramid TempleRose's FountainRose's Secret ArmorySand FortressSea ShrineSky Spire

Earth's Moon: Earth Moon Base
Jungle Moon: Jungle Moon Base
Gem Homeworld: Blue Diamond's OnsenKindergartenPink Diamond's PalacePrison TowerThrone RoomYellow Diamond's Extraction ChamberYellow Diamond's Bubble Room
Colonies: Klavius 7 • Kyanite Colony • Pink Diamond's Garden • Pink Diamond's Zoo • Unknown Ocean planet (The Reef) • Unknown Beach Planet • Unknown City planet • Upsilon 9 • Unknown Jungle Planet
Other: Garnet's RealmMalachite's RealmPearl's DimensionPink DimensionWarp Space

Attack the Light Locations Beach City (Beach House • Crystal Temple) • the Desert • Indigo CaveRed Temple • Strawberry Battlefield • Sunken Lunar Sea Spire
Save the Light Locations Ancient Sky Arena • Astral Plane • the Barn • Beach City (Beach City Woods • Beach House • Crystal Temple) • the Forge • Gem Battlefield • the Great North • Hessonite's Warship • Secret Temple of Secrets
The Phantom Fable Locations Abandoned Ward • Arcane Acropolis • the Barn • Beach City (Beach City Woods) • Buried Bastion • Delta Kindergarten • Forgotten Forest • Library 9
Unleash the Light Locations Crystal System Colony 215 (Kindergarten)Demantoid's WorldPyrope's World (Blue 4) (Palace of Light)Yellow 4
Comic Locations Antarctic Harmony Core Temple • Canary CoveClock TowerEmpire City Wildlife Rehabilitation Center • Harmony Core Temple • Moors of MarcoonUniverse Family Camping GroundTemple of the Frozen Fragment and Scorching Shard • Two Harmony Core Temples near the small island