Sea of Bygone Eras Hydroculus Locations and Route Guide
This page is for Oculi in the Sea of Bygone Eras region of Fontaine in Genshin Impact. Here you can find information on how to collect all 46 Oculi throughout the Sea of Bygone Eras.
Sea of Bygone Eras Hydroculus Guide
The Sea of Bygone Eras is a separate map unlocked through the World Quest series called "Canticles of Harmony". There are a total of 46 Hydroculus available on this map.
It is recommended to complete the World Quest series first before going out of your way to collect any Hydroculus to ensure all areas of the map are unlocked. World Quest completion also unlocks an additional traversal mechanic which may allow you to gain these Hydroculus even faster.
The map is fairly evenly split between a left and right side, both of which contribute to the Exploration Progress of the Sea of Bygone Eras.
Sea of Bygone Eras Left Side Hydroculus
Screenshots of all Locations
#1 Can be found under the Teleport
#2 Out in the open, close to the Teleport
#3 Is inside a rock hole
#4 To enter the cave, go down from #3, #4 is high up in the tunnel
#5 On the sword
#6 Right at the top of this large structure
#7 Behind rock structure highlighted by Elemental Sight
#8 Near the bottom
#9 At the top
#10 Much lower down compared to #9
#11 In the cave. Teleport back for #12
#12 Near the top of the map
#13 Hiding inside the rock
#14 Hiding near the bottom
#15 Close to the teleport
#16 On a statue leading underground into #17 and #18
#17 On the giant bell hanging from the ceiling
#18 Down on the left while exiting the area, easy to miss
#19 The hole housing the Oculus is higher up than the rest
#20 Straight ahead of #19 when you turn around
Sea of Bygone Eras Right Side Hydroculus
Screenshots of all Locations
#1 Inside the clam
#2 On the orange plant, higher up than #1
#3 Inside gold pillar
#4 Near the bottom, break rock
#5 Inside the cave near World Quest objective so you may have this
#6 Above the cave
#7 Above gold pillar
#8 Speak to both squids to unlock the area, the right squid requires you to defeat 3 enemies
#9 Above the huge kelp
#10 On cliff edge
#11 Underneath platform used in World Quest
#12 On rock spire
#13 On top of a separate rock near the top of the map
#14 In the middle of 2 plants near the bottom of the map
#15 Just north of the Teleport
#16 Explode the rock then return to the Teleport
#17 Out in the open
#18 Down below defended by a giant crab
#19 You can avoid the vishap fight by going around
#20 Inside the broken pillar
#21 Destroy the rock using the nearby crab
#22 Beyond the steering wheel, may have obtained in World Quest
#23 Inside the clam
#24 High up in the top of the building
#25 Near the end of the World Quest, hard to have unintentionally missed
#26 Behind you when you teleport in, after the World Quest you are unable to use the elevator
Changelog
- 24 Apr. 2024: Guide added.
This guide has been written by Shikhu (Discord - Shikhu), an avid Genshin Impact player who has been exploring Teyvat since the game has launched. He has experienced all the game has to offer from building his favorite characters, exploring the world to clearing Spiral Abyss each rotation. His favorite character being his C6 Furina.