There are a total of 271 Hydroculus in Genshin Impact, all located in the Fontaine region of Teyvat. Of these, 225 Hydroculi are found in the overworld, and 46 are located in the Sea of Bygone Eras, an underwater area added in update 4.6
. Hydroculus are collectible floating orbs used to upgrade the Statues of the Seven in Fontaine, providing rewards such as Primogems and Hydro Sigils. Many Hydroculi are hidden underwater or in hard-to-reach places, making them challenging to find
