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The Aquatic Depths is an underground biome completely filled with water. It is found underneath the Ocean biome's sandy floor, opposite of the 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 can be broken to release bubbles that briefly allow players that touch them to breathe underwater. 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.

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

Aquatic Depths
Characters Unique Treasures Unique Drops
Man o' WarMan o' War
Sharp ToothSharp Tooth
BarracudaBarracuda
HammerheadHammerhead
Giga ClamGiga Clam
OctopusOctopus
GlobeeGlobee
MorayMoray

During Hardmode:

Feeding FrenzyFeeding Frenzy
Vampire SquidVampire Squid
Crown of ThornsCrown of Thorns
KrakenKraken
Volt EelVolt Eel
BlobfishBlobfish
Putrid SerpentPutrid Serpent
Submerged MimicSubmerged Mimic
The WhaleThe Whale

Hardmode post-Plantera:

Aquatic HallucinationAquatic Hallucination
Abyssion, The Forgotten OneAbyssion, The Forgotten One(Boss)

From Depth Chests:

Magic ConchMagic Conch
File:Sea Turtle's Mystical Bulwark.pngSea Turtle's Mystical Bulwark
File:Agnor's Bowl.pngAgnor's Bowl
Rain StoneRain Stone
Aquamarine WineglassAquamarine Wineglass
Marine KelpMarine Kelp
Marine Kelp SeedsMarine Kelp Seeds
Spring WaterSpring Water

Banners:

Man o' War BannerMan o' War Banner
Sharp Tooth BannerSharp Tooth Banner
Barracuda BannerBarracuda Banner
Hammerhead BannerHammerhead Banner
Giga Clam BannerGiga Clam Banner
Octopus BannerOctopus Banner
Moray BannerMoray Banner
Feeding Frenzy BannerFeeding Frenzy Banner
Vampire Squid BannerVampire Squid Banner
Crown of Thorns BannerCrown of Thorns Banner
Mysterious BannerMysterious Banner
Kraken BannerKraken Banner
Volt Eel BannerVolt Eel Banner
Blobfish BannerBlobfish Banner
Putrid Serpent BannerPutrid Serpent Banner

From Octopuses & Man o' Wars:

Sea Ninja-StarSea Ninja-Star

From Hammerheads:

Cartilaged CatcherCartilaged Catcher

From Sharp Tooths, Hammerheads & Barracudas:

Depth ScalesDepth Scales
Golden ScaleGolden Scale

From Globees:

File:Deeplight Esca.pngDeeplight Esca

From Giga Clams:

PearlPearl
Nano Clam CaneNano Clam Cane

From Crowns of Thorns:

Spiny ShellSpiny Shell

From Krakens:

LeviathanLeviathan

From Crowns of Thorns and Krakens:

Brackish ClumpBrackish Clump

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

Abyssal ChitinAbyssal Chitin

From Volt Eels:

File:Volt Tomahawk.pngVolt Tomahawk

From Submerged Mimics:

Poseidon's ChargePoseidon's Charge
S. S. DevastatorS. S. Devastator
Hydromancer's CatalystHydromancer's Catalyst
Neptune's GraspNeptune's Grasp

From terrain:

AquaiteAquaite
Depth ChestDepth Chest
Marine RockMarine Rock
Mossy Marine RockMossy Marine Rock
Brackish ClumpBrackish Clump
PearlPearl
Marine KelpMarine Kelp
Marine Kelp SeedsMarine Kelp Seeds
Water ChestnutWater Chestnut

Notes

  • 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.
  • This biome cannot be artificially created, as the background wall tiles cannot be gathered.

Tips

  • 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

Biomes
 
Surface Layers Forest • Desert • Ocean • Snow biome • The Corruption • The Crimson • The Hallow
Underground Layers Aquatic Depths • Cavern • Dungeon • Ice biome • Underground Desert • Underground Jungle • Underground Mushroom • Underground Hallow • The Underworld
Mini-Biomes and Structures Blood Chamber • Floating Island • Granite Cave • Jungle Temple • Marble Cave • Meteorite • Spider Cave
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