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Back to the ten worlds

7Pressure Ocean

Rule: Oxygen. Stage: Expertise.

The whole world is sea, up to y 240, with no dry land. You arrive in a diving chamber on the sea floor. Without a helmet your breath lasts about half a minute under water; a snorkel helmet, one for each ore of the world, breathes for you from a tank of 3 to 12 minutes that refills in air pockets, bubble columns, over Air Vents, with an Oxygen Capsule or at the Abyssal Press. The helmets are fragile: hits wear them fast. Below y 110 the pressure crushes you; each Diving piece and a better helmet let you dive deeper.

  • 33 sof breath without a helmet
  • 12 minof air in a Pearl Snorkel Helmet
  • y 110where the pressure starts

Abyssal Pearl

Drop it into water at least 3 blocks deep: a whirlpool forms and opens World 7.

  • Inverted Crystal
  • Unstable Alloy ×2
  • Inverted Crystal
  • Unstable Alloy ×2
  • Double Core
  • Unstable Alloy ×2
  • Inverted Crystal
  • Unstable Alloy ×2
  • Inverted Crystal
Matrix WorkbenchAbyssal Pearl

Boss

Pressure Leviathan 3,027 health

It drops the Leviathan Core.

Creatures

Who lives here

Pick a creature to watch it move and use its own attacks. The boss guards the core that opens the next world.

Abyssal Hunter

Drag to turn it, scroll or pinch to zoom.

Abyssal Hunter

Circles, then charges from below.

Health
157
Damage
20.9

Attacks

Abyss Lunge
Crouches, then leaps from 3 to 12 blocks away: 130% damage on contact.
Pressure Jaws
A blow at 3 blocks, 120% damage, then oxygen -4.
Hunting Wake
Whirls, hitting everything within 2.6 blocks 3 times at 40% damage, then oxygen -2.

Open its technical sheet

How to meet it: Pressure Leviathan

Lair bossThe Sunken Trench Temple
  1. 1Walk 160 blocks south of the Threshold to its lair gate.
  2. 2Come within 10 blocks of the lair heart at the centre of the chamber.
  3. 3It wakes after a three-second tremor. Beat it and the treasure alcove opens: three chests of the world's best loot.
  4. 4The heart wakes again ten minutes later, for a second fight.

Lair Heart

Structures and their loot

Eleven structures generate across every world, each with its own purpose. Here is where to look, what waits inside, and what the chests can hold.

  • Combat

    Hunters' Trench

    Large, common

    A jagged rift crossed by an arch bridge, with ledges, scaffolding and a grotto at the bottom.

    A guarded loot room: spawners of the world's creatures around a rare chest (a vault chest in large ones), plus common chests.

  • Combat

    Dead Reef

    Medium, common

    Broken walls, a colonnade, a fallen column, a standing arch and a vaulted cellar.

    A guarded loot room: spawners of the world's creatures around a rare chest (a vault chest in large ones), plus common chests.

  • Combat

    Sunken City

    Large, rare

    A walled city with corner towers, gates, avenues, houses and a guarded keep.

    A guarded loot room: spawners of the world's creatures around a rare chest (a vault chest in large ones), plus common chests.

  • Exploration

    Wreck

    Medium, common

    A wrecked hull with a sterncastle cabin, a hold, masts and torn sails.

    Two to four chests hidden around: under tables, behind bookshelves, in cellars, in dead ends. The first is rare in medium and large ones.

  • Exploration

    Diving Bell

    Small, common

    A copper diving bell with portholes, a chain up to a buoy, crates and an anchor.

    Two to four chests hidden around: under tables, behind bookshelves, in cellars, in dead ends. The first is rare in medium and large ones.

  • Exploration

    Air Grotto

    Medium, common

    A great cocoon or crystal core with egg sacs around it.

    Two to four chests hidden around: under tables, behind bookshelves, in cellars, in dead ends. The first is rare in medium and large ones.

  • Story

    Abyssal Temple

    Large

    A stepped temple with a grand stair, a summit shrine and a pillared inner hall.

    A reading nook with a lectern and candles around a rare chest holding a page of the Journal.

  • Story

    Sunken Lighthouse

    Medium

    A striped lighthouse with a gallery, a glazed lantern room and the keeper's cottage.

    A reading nook with a lectern and candles around a rare chest holding a page of the Journal.

  • People

    Pressure Station

    Large, rare

    A laboratory of strange instruments, its upper floor furnished on the ceiling.

    The people of the world live here and trade with you, beside a common chest.

  • Secret

    Vault of the Deep

    Small

    A kiosk over a spiral stair down to an antechamber; a mural wall hides the way to the pedestal room.

    A puzzle or hidden passage leads to a vault chest with the world's hidden doll and a Journal page.

  • Combat

    Drowned Bastion

    Large, rare

    A walled courtyard with corner towers, a gatehouse with its portcullis and a keep at the back.

    A guarded loot room: spawners of the world's creatures around a rare chest (a vault chest in large ones), plus common chests.

What the chests can hold

Common chest

3 to 5 stacks

  • Oxygen Capsule
  • Apnea Kelp
  • Cooked Cod
  • Iron Nugget
  • Prismarine Shard
  • Arrow
  • Iron Ingot

Rare chest

often an enchanted book

  • Abyssal Salt
  • Nacre
  • Abyssal Cobalt
  • Pressure Pearl
  • Gold Ingot
  • Emerald
  • Enchanted Book
  • Bottle o' Enchanting
  • Golden Carrot
  • Prismarine Crystals

Vault chest

rare items too, and a 30% chance of one piece of the world's gear, 8% of an enchanted golden apple

  • Diamond
  • Golden Apple
  • Heart of the Sea
  • Thruster
  • Trench Trident
  • Tide Harpoon

Everything in this world

Every item and block, how to make or find it, and what the world asks of you.

Items

  • Abyssal Salt

    Rare

    Salt Snorkel Helmet and the Sapling of the Four Seasons.

    Found on Abyssal Hunter, Blade School, Abyssal Salt Ore

  • Nacre

    Rare

    Mined from reef veins. Nacre Snorkel Helmet.

    Found on Nacre Vein

  • Abyssal Cobalt

    Rare

    Cobalt Snorkel Helmet and the diving suit.

    Found on Abyssal Cobalt Ore

  • Pressure Pearl

    Epic

    Pearl Snorkel Helmet and the Sapling of the Four Seasons.

    • Abyssal Salt ×6
    • Prismarine Crystals ×2
    Abyssal PressPressure Pearl

    Found on Pressure Jelly, Bell Crab, Trench Eel, Pearl Bed

  • Oxygen Capsule ×3

    Common

    Refills half of a snorkel helmet's tank, or your breath.

    Effect
    Fills half a snorkel helmet's tank
    Effect
    Without one: +60 breath
    • Kelp ×4
    • Abyssal Salt
    Abyssal PressOxygen Capsule ×3

  • Thruster

    Epic

    Speeds you up underwater.

    Effect
    Cooldown 0.75 s
    • Pressure Pearl ×2
    • Unstable Alloy ×4
    Abyssal PressThruster

  • Trench Trident

    Epic
    Attack damage
    23
    Attack speed
    1.6
    Durability
    1,560
    • Abyssal Salt ×8
    • Stick
    Abyssal PressTrench Trident

  • Leviathan Core

    Legendary

    Opens the way into World 8.

    Found on Pressure Leviathan

  • Abyssal Pearl

    Epic

    Drop it into water at least 3 blocks deep: a whirlpool forms and opens World 7.

    • Inverted Crystal
    • Unstable Alloy ×2
    • Inverted Crystal
    • Unstable Alloy ×2
    • Double Core
    • Unstable Alloy ×2
    • Inverted Crystal
    • Unstable Alloy ×2
    • Inverted Crystal
    Matrix WorkbenchAbyssal Pearl

  • Hidden Doll 7

    Ten notches are carved under its base. Nest the ten dolls in order...

  • Apnea Kelp ×3

    Common

    Oxygen lasts twice as long for 5 minutes.

    Food
    6 (3 shanks)
    Saturation
    9.6
    Effect
    Lasts 5 min
    Effect
    +30 breath
    • Dried Kelp ×3
    • Abyssal Salt
    Abyssal PressApnea Kelp ×3

  • Salt Snorkel Helmet

    Rare

    Breathe under water while its tank holds air (3 min). Fragile: hits wear it fast.

    Armor
    2
    Air tank
    3 min
    Durability
    44

  • Nacre Snorkel Helmet

    Rare

    Breathe under water while its tank holds air (5 min). Fragile: hits wear it fast.

    Armor
    3
    Toughness
    1
    Air tank
    5 min
    Durability
    66

  • Cobalt Snorkel Helmet

    Epic

    Breathe under water while its tank holds air (8 min). Fragile: hits wear it fast.

    Armor
    3
    Toughness
    2
    Air tank
    8 min
    Durability
    110

  • Pearl Snorkel Helmet

    Epic

    Breathe under water while its tank holds air (12 min). Fragile: hits wear it fast.

    Armor
    4
    Toughness
    3
    Air tank
    12 min
    Durability
    154

  • Pressure Leviathan Trophy

    Epic

    A painted doll of the boss, won in its trial.

  • Tide Harpoon

    Epic

    Use it to throw: it drags what it hits back to you, farther under water. Its line brings it home.

    Attack damage
    21
    Attack speed
    1.4
    Thrown
    yes
    Durability
    1,560

  • Diving Chestplate

    Epic

    Resists pressure. Wear it with a snorkel helmet.

    Armor
    9
    Toughness
    2.5
    Knockback resistance
    14 %
    Max health
    +5
    Durability
    992
    • Abyssal Cobalt ×8
    Abyssal PressDiving Chestplate

  • Diving Leggings

    Epic

    Resists pressure. Wear it with a snorkel helmet.

    Armor
    7
    Toughness
    2.5
    Knockback resistance
    14 %
    Max health
    +4
    Durability
    930
    • Abyssal Cobalt ×7
    Abyssal PressDiving Leggings

  • Diving Boots

    Epic

    Resists pressure. Wear it with a snorkel helmet.

    Armor
    4
    Toughness
    2.5
    Knockback resistance
    14 %
    Max health
    +2
    Durability
    806
    • Abyssal Cobalt ×4
    Abyssal PressDiving Boots

Blocks

  • World Soil 7

    The soil of World 7.

  • Abyssal Press

    Must be deep underwater. Also refills a snorkel helmet.

    • Unstable Alloy
    • Unstable Alloy
    • Unstable Alloy
    • Piston
    • Inverted Crystal
    • Piston
    • Unstable Alloy
    • Unstable Alloy
    • Unstable Alloy
    Matrix WorkbenchAbyssal Press

  • Abyssal Sand

  • Trench Rock

  • Pressure Coral

  • Abyssal Salt Ore

    Mined, it gives Abyssal Salt

  • Nacre Vein

    Mined, it gives Nacre

  • Abyssal Cobalt Ore

    Mined, it gives Abyssal Cobalt

  • Pearl Bed

    Mined, it gives Pressure Pearl

  • Air Vent

    Breathes out air. Swim over it to refill a snorkel helmet.

Quests

  • Under PressureCraft a Salt Snorkel Helmet at the Abyssal Press.
  • CompressPress something at the Abyssal Press.
  • The Silent StationRepair 3 station cables: use Abyssal Cobalt inside a Pressure Station.
  • The Wreck's CrewRecover 3 crew plates, one in each of 3 wrecks.
  • The SignalRescue the castaways (+10) or divert their oxygen (-10).
  • One BreathDefeat a Trench Eel.

Achievements

  • Great DepthOpen World 7.Progress
  • PressurizedBreathe through a snorkel helmet.Progress
  • Silence of the TrenchesDefeat the Leviathan.Progress
  • Extreme DiveReach the deepest trench.Exploration
  • Open SeaVisit the 10 structure types.Exploration
  • Wet PaperFind the 5 Journal pages.Exploration
  • School ScatteredKill 5 Blade Schools.Combat
  • Last BreathBeat the Leviathan with under 5% oxygen left in your helmet or your lungs.Combat
  • Forgotten PlateSearch a sunken wreck.Hidden, hidden until you earn it
  • Drowned DollFind the hidden doll of the world.Hidden, hidden until you earn it

Abyssal Press

Abyssal Press

Must be deep underwater. Also refills a snorkel helmet.

Abyssal Press

Built at the Matrix Workbench from

  • Unstable Alloy
  • Unstable Alloy
  • Unstable Alloy
  • Piston
  • Inverted Crystal
  • Piston
  • Unstable Alloy
  • Unstable Alloy
  • Unstable Alloy
Matrix WorkbenchAbyssal Press
  • Kelp ×4
  • Abyssal Salt
Abyssal PressOxygen Capsule ×3
  • Pressure Pearl ×2
  • Unstable Alloy ×4
Abyssal PressThruster
  • Abyssal Salt ×6
  • Prismarine Crystals ×2
Abyssal PressPressure Pearl
  • Dried Kelp ×3
  • Abyssal Salt
Abyssal PressApnea Kelp ×3
  • Abyssal Salt ×8
  • Stick
Abyssal PressTrench Trident
  • Abyssal Cobalt ×8
Abyssal PressDiving Chestplate
  • Abyssal Cobalt ×7
Abyssal PressDiving Leggings
  • Abyssal Cobalt ×4
Abyssal PressDiving Boots

What you'll carry

  • Abyssal SaltSalt Snorkel Helmet and the Sapling of the Four Seasons.
  • NacreMined from reef veins. Nacre Snorkel Helmet.
  • Abyssal CobaltCobalt Snorkel Helmet and the diving suit.
  • Pressure PearlPearl Snorkel Helmet and the Sapling of the Four Seasons.
  • Oxygen CapsuleRefills half of a snorkel helmet's tank, or your breath.
  • ThrusterSpeeds you up underwater.
  • Trench Trident
  • Salt Snorkel HelmetBreathe under water while its tank holds air (3 min). Fragile: hits wear it fast.
  • Nacre Snorkel HelmetBreathe under water while its tank holds air (5 min). Fragile: hits wear it fast.
  • Cobalt Snorkel HelmetBreathe under water while its tank holds air (8 min). Fragile: hits wear it fast.
  • Pearl Snorkel HelmetBreathe under water while its tank holds air (12 min). Fragile: hits wear it fast.
  • Pressure Leviathan TrophyA painted doll of the boss, won in its trial.
  • Tide HarpoonUse it to throw: it drags what it hits back to you, farther under water. Its line brings it home.
  • Apnea KelpOxygen lasts twice as long for 5 minutes.

Diving ChestplateDiving LeggingsDiving Boots

Armour set Three pieces and no helmet: the head slot belongs to the snorkel helmets. A 23-damage weapon at this tier. Resists pressure. Wear it with a snorkel helmet.

Eleven structures

Combat

Hunters' Trench, Dead Reef, Sunken City, Drowned Bastion

Exploration and loot

Wreck, Diving Bell, Air Grotto

Story

Abyssal Temple, Sunken Lighthouse

Utility

Pressure Station

Secret

Vault of the Deep