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Aquatic Depths

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Aquatic depths banner.png

The Aquatic Depths is an underground biome completely filled with water. It is found underneath the Ocean biome's sandy floor, on the opposite side of the world's Dungeon. The player can enter the Aquatic Depths through a huge gap in the sand.

The biome features its own unique tiles, backdrops, enemies, loot and music. Certain ambient objects found in the biome release bubbles that grant the Refreshing Bubble buff when touched by a player, briefly allowing them to breathe underwater and move at normal speed. A Bubble Magnet can be used to attract these bubbles and increase their efficiency. Platforms that elevate Depth Chests can randomly be found within the pockets of open water within the biome; they contain their own assortment of unique loot. The Aquatic Depths itself is generated with Depth's Rock and Depth's Walls, meaning the Aquatic Depths will refill with water if drained.

In addition to containing many veins of Mossy Gold or Mossy Platinum Ore, the Aquatic Depths also contains a unique ore, Aquaite, and a unique gem, Pearls, that are both used in several water-related items. It also contains pockets of Brackish Clumps, which can be extractinated similarly to Silt and Slush.

While in the Aquatic Depths, players will receive a Choking Aura debuff, which makes them lose health over time if they are exposed to air. This debuff will be replaced with the Untainted Waters buff if Abyssion, The Forgotten One has been defeated at least once in that world, making the waters of the biome breathable and the air non-toxic.

Content[edit | edit source]

Aquatic Depths
Characters Unique Treasures Unique Drops
Man o' War.pngMan o' War
Sharp Tooth.pngSharp Tooth
Giga Clam.pngGiga Clam

During Hardmode:

Feeding Frenzy.pngFeeding Frenzy
Vampire Squid.pngVampire Squid
Crown of Thorns.pngCrown of Thorns
Volt Eel.pngVolt Eel
Putrid Serpent.pngPutrid Serpent
Abyssal Angler.pngAbyssal Angler
Submerged Mimic.pngSubmerged Mimic
The Whale.pngThe Whale

Hardmode post-Plantera:

Aquatic Hallucination.pngAquatic Hallucination
Abyssion, The Forgotten One.pngAbyssion, The Forgotten One(Boss)

From Depth Chests:

Magic Conch.pngMagic Conch
Sea Turtle's Mystical Bulwark.pngSea Turtle's Mystical Bulwark
Agnor's Bowl.pngAgnor's Bowl
Rain Stone.pngRain Stone
Steel Drum.pngSteel Drum
Marine Kelp.pngMarine Kelp
Marine Kelp Seeds.pngMarine Kelp Seeds
Spring Water.pngSpring Water


Man o' War Banner.pngMan o' War Banner
Sharp Tooth Banner.pngSharp Tooth Banner
Barracuda Banner.pngBarracuda Banner
Blowfish Banner.pngBlowfish Banner
Hammerhead Banner.pngHammerhead Banner
Giga Clam Banner.pngGiga Clam Banner
Octopus Banner.pngOctopus Banner
Moray Banner.pngMoray Banner
Feeding Frenzy Banner.pngFeeding Frenzy Banner
Vampire Squid Banner.pngVampire Squid Banner
Crown of Thorns Banner.pngCrown of Thorns Banner
Kraken Banner.pngKraken Banner
Volt Eel Banner.pngVolt Eel Banner
Blobfish Banner.pngBlobfish Banner
Putrid Serpent Banner.pngPutrid Serpent Banner
Abyssal Angler Banner.pngAbyssal Angler Banner
Mysterious Banner.pngMysterious Banner

From Octopuses & Man o' Wars:

Sea Ninja-Star.pngSea Ninja-Star

From Hammerheads:

Cartilaged Catcher.pngCartilaged Catcher

From Sharp Tooths, Hammerheads, Barracudas & Blowfish:

Depth Scales.pngDepth Scales

From Sharp Tooths, Hammerheads & Barracudas:

Golden Scale.pngGolden Scale

From Blowfish:

Bomb Fish.pngBomb Fish

From Globees:

Deeplight Esca.pngDeeplight Esca

From Giga Clams:

Nano Clam Cane.pngNano Clam Cane

From Crowns of Thorns:

Spiny Shell.pngSpiny Shell

From Krakens:


From Crowns of Thorns and Krakens:

Brackish Clump.pngBrackish Clump

From Blobfish, Feeding Frenzies, Crowns of Thorns, Krakens, Putrid Serpents, Vampire Squids & Volt Eels:

Abyssal Chitin.pngAbyssal Chitin

From Vampire Squids:

Vampire Gland.pngVampire Gland

From Volt Eels:

Volt Hatchet.pngVolt Hatchet

From Submerged Mimics:

Poseidon's Charge.pngPoseidon's Charge
S. S. Devastator.pngS. S. Devastator
Hydromancer's Catalyst.pngHydromancer's Catalyst
Neptune's Grasp.pngNeptune's Grasp

From The Whale:

How to speak Whale - A Biography.pngHow to speak Whale - A Biography

From any enemy in Hardmode:

Aquatic Depths Key.pngAquatic Depths Key(from any enemy, 1/2500 chance)

From Abyssion, The Forgotten One:

The Incubator.pngThe Incubator
Mantis Shrimp Punch.pngMantis Shrimp Punch
Trench Spitter.pngTrench Spitter
Siren's Lyre.pngSiren's Lyre
R'lyeh's Lost Rod.pngR'lyeh's Lost Rod
Abyssion Mask.pngAbyssion Mask
Abyssion Trophy.pngAbyssion Trophy
Abyssal Shell.pngAbyssal Shell(in Expert mode only)

From terrain:

Depth Chest.pngDepth Chest
Marine Rock.pngMarine Rock
Mossy Marine Rock.pngMossy Marine Rock
Brackish Clump.pngBrackish Clump
Marine Kelp.pngMarine Kelp
Marine Kelp Seeds.pngMarine Kelp Seeds
Water Chestnut.pngWater Chestnut
Crystal Wave.pngCrystal Wave

Notes[edit | edit source]

  • Water in this biome takes on a very deep, dark blue color, but the difference is somewhat hard to see due to the background wall.
  • Upon defeating Plantera for the first time in a world, a status message, "Something stirs in the Aquatic Depths..." will be displayed, notifying the player that Aquatic Hallucinations now spawn in the Aquatic Depths and therefore Abyssion, The Forgotten One can now be summoned.
  • An artificial Aquatic Depths can be created with a group of 700 or more Depth's Rock blocks.

Tips[edit | edit source]

  • Players exploring the Aquatic Depths run the risk of drowning if not equipped with the right equipment. To avoid drowning, bring items that aid in breathing underwater, such as the Gills Potion, the Golden Scale or Ocean armor.

History[edit | edit source]

Surface Layers Desert • Ocean • Snow • Surface • The Corruption • The Crimson • The Hallow
Underground Layers Aquatic Depths • Cavern • Underground Desert • Underground Hallow • Underground Jungle • Underground Snow • The Underworld
Special Biomes and Structures Blood Chamber • Dungeon • Floating Island • Granite Cave • Lihzahrd Temple • Marble Cave • Meteorite • Mushroom Biome • Spider Nest