StructureASA

Hydrosphere

Place the Hydrosphere underwater to generate an air bubble, or position it above water to form a water bubble. Hydrospheres cannot be placed near each other.

Weight4

Stack1

CraftableNo

Details

Category: Structure
Games: ASA

Video guides: search YouTube for Hydrosphere guides

Hydrosphere — Detailed Guide

An air or water bubble you can place

The Hydrosphere is a structure that our records list for ARK: Survival Ascended; the wiki says it was added with Aquatica. Set underwater, it surrounds itself with a bubble of air; set above the surface, it makes a bubble of water instead. As the game text puts it, "Hydrospheres cannot be placed near each other." The ARK Wiki puts the bubble's diameter at roughly 17 foundations.

A base on the sea floor

An underwater air bubble gives a breathable space for building deep below the surface. The wiki says it supports anything a dry base would, including growing crops and breeding land creatures. Aquatic Creatures cannot enter the bubble. Pressure Sickness has no effect on a survivor inside, although acclimation to the pressure carries on.

A water bubble on land

Above the surface the effect flips. The water bubble lets survivors plant Cucumis in an Underwater Crop Plot or breed underwater creatures at a base with no water access; the wiki notes this is handy on Scorched Earth. Underwater Crop Plots placed inside survive if the Hydrosphere is switched off and keep producing; the wiki reminds players to irrigate them.

Warning: turning the Hydrosphere off while aquatic tames sit in its water bubble instantly kills every tame there that lives only in water.

Fuel, decay and damage

Fuel: it runs on Gasoline, and from version 360.35 on Element as well; Element Shards do not work. The wiki remarks that Gasoline works even though its counterpart, the Aqualyrium, was designed to power underwater structures.
Placement: keep it off Platform Saddles, as the wiki warns this can make creatures float upward.
Decay: the default decay timer is 40 days, and it is shorter when FastDecayUnsnappedCoreStructures is set to true.
Damage: it counts as a Tek structure. Only Titans, Bosses, Tek Saddles, the Tek Rifle, Explosives, Corrupted Creatures, Enraged Creatures, the Arthropluera, the Titanosaur and the DodoRex can harm it.