Bubbly Basin in Pokopia

The Expansion Pass area, almost entirely underwater, over a sunken Cerulean City.

Bubbly Basin arrived with the first part of the Expansion Pass, and it is the one area you spend mostly under the surface. Cerulean City went down rather than up, so the landmarks are all still there and all still recognisable, just wet.

Nugget Bridge, Cerulean Cave, the Gym and Bill's house are the obvious ones. Less obvious: Misty's room behind the Gym, a lab at the bottom of the sea trench, and a coral room near the temple. The basin rewards swimming into places that do not look like entrances.

It brings its own Pokémon as well, on a separate basin dex, which makes it the largest single addition to the game since release.

Used to be: Cerulean City
To gather: 394
Shop items: 71

Materials you gather (17)

Sea glass fragments

Non burnable garbage

Glowing mushrooms

Plants and blocks (112)

Seabed tall grass

Yellow tall grass

Seabed flowers (Purple)

Blooming watermelon plant

White driftwood

Mossy ocean boulder

Small coral (Red)

Small coral (Green)

Tall coral (Purple)

Colorful corals

Twisty waterweed

Carved blue rock

Mossy ocean soil

Star-spotted rock

Vibrant glossy tiling

Bumpy Beach sand

Damaged glossy tiling

Stone brick wall

Stone pillar (middle)

Cracked sandstone

Stylish brick wall (middle)

Stylish brick wall (upper)

Crisscross wooden flooring

Iron-plate flooring

Rusted iron-plate flooring

Water pillar quarter

Pokémon Center wall (trim)

Dry yellow tall grass

Cobblestone wall

Light wooden wall

Diagonal wooden flooring

Dry yellow-green shoots

Yellow-green shoots

Rectangle tiling

Dark marble flooring

Gray circle flooring

Extravagant carpeting

Stately flooring

Damaged stone tiling

Pop art wall (upper)

Pop art wall (middle)

Pop art wall (lower)

Simple square tiling

Confectionery wall (lower)

Gradient wall (lower)

Gradient wall (upper)

Colorful fish-scale tiling

Stylish wall (upper)

Stylish wall (middle)

Hardwood flooring

Simple flooring

Hexagonal flooring

Light antique wall (lower)

Light antique wall (middle)

Light antique wall (upper)

Dynamic Ditto print

Fanned-out Ditto print

Wooden pillar (lower)

Chic anchor print

Colorful anchor print

Confectionery wall (upper)

Confectionery wall (middle)

Colorful corals print

Clustered corals print

Damaged stone flooring

Items found in the area (199)

Pointed wooden fencing

Worn wooden crate

Worn treasure chest

Construction supplies

Stone fragments

Sloped scale roof

Broken window pane

Grubby newspaper

Metal fragments

Excavation tools

Dangling streetlight

Slim information board

Wavy-pattern planter

Scale roof valley

Wireless power-transmitter post

Flat scale roof

Industrial chair

Decorative bookshelf

Decorative storage shelf

Broken iron steps

Sloped wavy roof

Fancy wavy roof decoration

Broken bookcase

Wavy hipped roof

Sewer-hole cover

Mysterious pedestal

Decorative Great Ball

Decorative Heal Ball

Decorative Dive Ball

Decorative Net Ball

Decorative Lure Ball

Decorative Quick ball

Mysterious statue

Spectator chair

Concrete border (line)

Concrete border (corner)

Industrial bench

Vending machine

Wooden siding (panel)

Wooden siding (corner)

Sloped stone roof

Stone roof decoration

Cardboard boxes

Fluorescent light

Wall-mounted tools

Wall-mounted table

Gyarados fountain

Substitute doll

Underground hatch

Decorative cloth

Cycle shop sign

Stepping stones

Crystal cluster

Small garbage can

Small square rug

Submarine window

Seashell fencing

Items inside Poké Balls (41)

Marine chair RecipeQuantity 1

Wall plantQuantity 1

Wireless power-transmitter postQuantity 5

Marine tableQuantity 2

Sand toysQuantity 1

Seabed flower seedsQuantity 5

Sand den kitQuantity 1

Netting RecipeQuantity 1

Heat RockQuantity 1

Submarine kitQuantity 1

Imperial house kitQuantity 1

Ornate decorative shelfQuantity 1

LampionQuantity 10

Marine chest RecipeQuantity 1

Buoyant blockQuantity 50

Watermelon seedsQuantity 5

Ship's wheelQuantity 1

LanternQuantity 2

PokémetalQuantity 5

Big NuggetQuantity 1

Battle posterQuantity 1

Vibrant glossy tiling RecipeQuantity 1

Ocean door RecipeQuantity 1

PokémetalQuantity 5

LampionQuantity 10

Ornate decorative shelfQuantity 1

Beach posterQuantity 1

PokémetalQuantity 5

Tabletop micQuantity 1

Ocean pals rugQuantity 1

Clock tower kitQuantity 1

Colorful corals print (wallpaper) RecipeQuantity 1

Fanned-out Ditto print (wallpaper) RecipeQuantity 1

Digital wall RecipeQuantity 1

Portal podQuantity 1

Colorful anchor print (wallpaper) RecipeQuantity 1

Big treasure chestQuantity 1

Resort hammockQuantity 1

Big NuggetQuantity 1

Security posterQuantity 1

Overlapping waves print (wallpaper) RecipeQuantity 1

Treasure (15)

Large lost sunken relic

Small lost relic

Large lost relic

Substitute Doll

Canalave City (Night)

Undella Town (Summer)

Items found in Whirlpools (10)

Watermelon seeds

Seabed flower seeds

Star-spotted rock

Sea glass fragments

Rare Pokémetal

Imperial cottage kit

Imperial house kit

Shop items sold here (71)

Each unlocks at the area level shown.

Item	Unlocks at
Marine table	Lv. 2
Marine chair	Lv. 2
Sand toys	Lv. 2
Submarine kit	Lv. 2
Buoyant block Recipe	Lv. 2
Glossy tiling Recipe	Lv. 2
Carved blue rock Recipe	Lv. 2
Seabed flower seeds	Lv. 2
Toolbox	Lv. 3
Lampion	Lv. 3
Marine closet	Lv. 3
Cushion bed	Lv. 3
Grubby pearl	Lv. 3
Clock tower kit	Lv. 3
Aqua cottage kit	Lv. 3
Marine dresser Recipe	Lv. 3
Sandpile Recipe	Lv. 3
Seashell fencing Recipe	Lv. 3
Floating logs Recipe	Lv. 3
Watermelon seeds	Lv. 3
Bottled ship	Lv. 4
Sparkling jewelry	Lv. 4
Imperial cottage kit	Lv. 4
Laboratory kit	Lv. 4
Pearl streetlight Recipe	Lv. 4
Pointed wooden fencing Recipe	Lv. 4
Sloped scale roof Recipe	Lv. 4
Scale hipped roof Recipe	Lv. 4
Scale roof valley Recipe	Lv. 4
Flat scale roof Recipe	Lv. 4
Scale roof decoration Recipe	Lv. 4
Scale awning Recipe	Lv. 4
Teaware set	Lv. 5
Book stack	Lv. 5
Chain lamp	Lv. 5
Imperial house kit	Lv. 5
Supermarket kit	Lv. 5
Marine closet Recipe	Lv. 5
Marine table Recipe	Lv. 5
Lacquered wall Recipe	Lv. 5
Gradient wall (wallpaper) Recipe	Lv. 5
Supermarket sign	Lv. 6
Ornate chair Recipe	Lv. 6
Bubble machine Recipe	Lv. 6
Ornate door Recipe	Lv. 6
Metal wall Recipe	Lv. 6
Pathway light (line) Recipe	Lv. 6
Pathway light (single) Recipe	Lv. 6
Pathway light (corner) Recipe	Lv. 6
Ocean pals rug	Lv. 6
Rare Pokémetal	Lv. 7
Ornate table Recipe	Lv. 7
Wavy-pattern planter Recipe	Lv. 7
Ornate window Recipe	Lv. 7
Ornate wall Recipe	Lv. 7
Ornate bed Recipe	Lv. 8
Submarine door Recipe	Lv. 8
Submarine window Recipe	Lv. 8
Hatch Recipe	Lv. 8
Gradient wall (upper) Recipe	Lv. 8
Gradient wall (lower) Recipe	Lv. 8
Harp	Lv. 9
Ornate stand Recipe	Lv. 9
Ornate partition Recipe	Lv. 9
Rectangle tiling Recipe	Lv. 9
Ornate decorative shelf Recipe	Lv. 10
Stone-accent wall Recipe	Lv. 10
Stately flooring Recipe	Lv. 10
Stately wall (upper lower) Recipe	Lv. 10
Stately wall (middle) Recipe	Lv. 10
Basin Pokémon Center kit Recipe	Lv. 10

Frequently asked questions

What city is Bubbly Basin?: Cerulean City, sunk. Nugget Bridge, Cerulean Cave, the Gym and Bill's house are all in the basin, underwater.
Do you need the Expansion Pass for Bubbly Basin?: Yes. Bubbly Basin came with the first part of the Pokémon Pokopia Expansion Pass, along with the Pokémon on its own basin dex.

Other areas

Withered Wastelands Bleak Beach Rocky Ridges Sparkling Skylands Palette Town Dream Islands Cloud Islands