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All 85 Hydroculus in Fontaine V4.0

There are a total of 85 Hydroculus in Fontain and here is the full guide and route on how to get it.

Please complete all the important World Quests first before starting to follow this route because my guide assumes you already complete all important quests to unlock locked areas and waypoints.
1. Ann of the Narzissenkreuz
2. Ancient Colors
3. Aqueous Tidemark


▌3 Hydroculus in Romaritime Harbor

➥ Keynote: Statue of the Seven is shortformed to S7.

  1. Teleport to Statue of the Seven in Romaritime Harbor and glide southwest towards a ship.
  2. Teleport again to the S7 in the harbor and walk forward to the aquabus. If there’s no aquabus, go to the bench on the left and interact with the box to summon another aquabus.
  3. Teleport to Sin’s End Domain and keep climbing the mountain in front of you until you reach the top where the Hydroculus is.

▌22 Hydroculus in Beryl Region

  1. Teleport to Beryl Region southeast waypoint (near Emperor of Fire and Iron) and head east to the shore.
  2. Teleport again to the same waypoint and head northwest but this time stopped at a scaffolding. Glide slowly so you can take the Hydroculus that were floating in the middle.
  3. Teleport to the Elynas directly south waypoint and head north (or you can walk from the previous location) to the hill behind a building.
  4. From the previous location, head northwest where you can see a sealed Precious Chest. Collect 3 Seelies from around the location to unlock the chest and spawn a small blue teleport bubble that will appear and you can use it to reach the Hydroculus floating above the sky. If you don’t know how to solve the puzzle, check my guide here: Luxurious Chest on the Sky in Beryl Region.
  1. Teleport to Beryl Region southeast waypoint (near the S7 and a pond) and head east to the shore for a Hydroculus on top of a ship.
  2. Teleport to S7 and head southeast to the mountain. Climb the mountain to the top to get the Hydroculus.
  3. From the previous location, glide southwest to the hot spring. The water here is too hot and you need to complete a puzzle to lower the temperature and get the Hydroculus inside the water. If you don’t know how to solve the puzzle, check my guide here: Boiling Lake Puzzle in Beryl Region.
  4. Swim back up and walk northwest to the purple patches of land. The Hydroculus is under the debris.
  1. From the previous location, head west and climb the tall mountain you can see for the Hydroculus on top.
  2. Glide down southwest towards the round arena. Use the small blue bubble teleport on top of a hill if you didn’t manage to get the Hydroculus on the first try.
  3. Teleport to Elynas south waypoint (right under the wording) and defeat the Hilichurl Rouge right in front of you. After it’s defeated, a bubble teleport will appear and you can use it to reach the Antoine Roger Aircraft. On top of the aircraft, wait until a Remarkable Chest appears and claim the reward so a waterplank that will lead to the Hydroculus will appear.
  4. Glide down to the north to the protruding sharp rock with Hydroculus on top of it.
  1. Glide north again towards another sharp rock (or is it bone) and climb to the top for the Hydroculus.
  2. Head north again to the shore for another sharp rock and the Hydroculus is at the end of the rock.
  3. Teleport to Elynas northeast waypoint and head south to the top of the mountain for the Hydroculus.
  1. Teleport to Merusea Village waypoint and head west to Mamere’s house from the main quest and you can see the Hydroculus.
  2. Go back and enter the pond beside Xana’s stall and swim further downwards to the lower area of Merusea Village and you can see the Hydroculus behind Granna (Make sure to complete A Brush of Seafoam and Crimson quest for this shortcut).
  3. Teleport to Merusea Village waypoint again and enter the purple warp to teleport to “A Lonely Place.” The Hydroculus is on the upside-down tower.
  4. Teleport to S7 and head northwest towards the pond and swim further downwards. Use the Armored Crab’s to destroy the breakable rock for a Hydroculus behind it.
  1. Teleport to Elynas north underwater waypoint and swim south to a wrecked building. The Hydroculus is behind a Bullet Barnacle (You need to break it using Armored Crab’s ability). 
  2. Teleport to S7 and go back to the hot spring in the south. Because of Hydroculus #10, you should have completed the puzzle here. Use the bubble teleport between the 3 Volume Detection Mechanism to reach another underwater area. When you arrived, look to your right and you will see a breakable rock. Use the near Armored Crab’s ability to break the rock and get the Hydroculus under it.
  3. Continue swimming in there (there’s only one route there) and swim past Iron Viscount- the giant crab there- to enter Fontaine’s Current. You will see a Hydroculus at the end of it.

▌11 Hydroculus in West Slopes of Mont Automnequi

  1. Teleport to West Slopes southwest waypoint near the shore and head south to a ship.
  2. From the previous location, head northeast towards the small isle with Hilichurl Rouge and Hydroculus on top of a rock.
  3. Teleport again to the same waypoint and climb the hill on your north for the Hydroculus on top of it.
  4. From the previous location, glide northeast towards a small house. Use the bubble teleport to reach the Hydroculus hanging in the air.
  1. From on top of the house where you just landed (after using the bubble teleport), enter the small tunnel northeast that leads to the aquabus’ lane. Enter the tunnel to reach the Hydroculus.
  2. Teleport again to West Slopes waypoint and head south towards an Antoine Roger Aircraft and ride it to the air. Continue to sail the aircraft until the end so you can get the Hydroculus on top of the mountain.
  3. From the top of the mountain, glide north towards the tower with a sharp blue crystal at the top. If you didn’t reach the Hydroculus on top of the tower in time, solve the Pneumousia Relay puzzle and defeat the enemies at the bottom of the tower to spawn a bubble teleport that you can use to reach the top of the tower (you can’t climb the tower).
  4. From the previous location at the top of the tower, glide northwest until you reach a house near the shore.
  1. Teleport to Poisson waypoint and climb back up to the huge wrecked ship just above the waypoint. Climb the remaining of the ship until you reach the pointed end of it.
  2. Go back to the underground area and enter the water below the first bridge in Poisson. The Hydroculus is above the bubble teleport.
  3. Swim back up and head north towards the huge ship and walk along the ramps until you reach the top.

▌31 Hydroculus in Court of Fontaine

  1. Teleport to Court of Fontaine north space anchor (near the domain) and head northwest towards the aquabus lane. Climb the lane and walk to the end of the lane for the Hydroculus.
  2. From the previous location, keep walking on the lane that leads south. Around the middle of the lane, you will see a bubble teleport on the left side of the lane. Use the bubble teleport to reach the Hydroculus on the mountain (you can climb manually but this method is much faster).
  3. Teleport to Court of Fontain northwest space anchor (near the domain) and head north to the flower garden. Do not step on any of the flowers and use the Windmill Mechanism so you can reach the Hydroculus floating on top of the garden.
  4. While still gliding from the previous location, glide east towards the Hilichurl Camp.
  1. From the previous location, walk southwest towards a house and you can see a Hydroculus on top of a circular water tank.
  2. From the old house, head south to the high building with a pointed blue crystal on top of it. If you didn’t manage to reach the top of the tower by gliding, defeat the enemies at the bottom to unlock the Precious Chest and spawn a bubble teleport that will lead you to the Hydroculus.
  3. From the high ground at the tall building, glide south towards another sealed Precious Chest. Complete the puzzle here where you need to search for 3 Seelies to unseal the chest and create a wind current so you can safely glide above where the Hydroculus is floating. If you didn’t know how to complete the puzzle, refer to my guide here: Precious Chest Puzzle for Hydroculus in Court of Fontaine.
  4. Teleport to Court of Fontaine northwest space anchor (near the domain) and walk a little to the west. Stop at the Antoine Roger Aircraft and use the aircraft as it will fly you to the top of the Court of Fontaine with Hydroculus on top of the building.
  1. From the top of the building, glide northeast towards the circular building with another Hydroculus on top of it.
  2. From the previous location, walk southeast towards the pond and swim in it to get the Hydroculus in the middle.
  3. Walk back to the north a little bit until you see a Time-Trial Challenge. Start the challenge as it will create wind currents for you to glide and ends the challenge exactly at the location of this Hydroculus on top of an extremely tall high pillar.
  4. From the high pillar at #47, glide southwest towards a building where the aquabus will sail past.
  1. From the previous location, glide slowly to the northwest towards under the aquabus lane.
  2. Teleport to Court of Fontaine southwest underwater waypoint and swim back up to the east. You can climb on top of the tower and use the bubble teleport to reach the Hydroculus on top. The bubble will continue to teleport you to a waterplanks and you can continue to use it for a Precious Chest.
  3. Teleport to Court of Fontaine far south underwater waypoint (near the Talent Mats Domain) and swim back up for the Hydroculus on top of the water. Swim back up using any Fontaine characters or Hydro Traveler so they can leap into the air (dolphin dive) when swimming from underwater to the top (Other characters can’t do it).
  4. Teleport to Salacia Plain east underwater waypoint and swim west towards an Echoing Conch surrounded by a blue dome. You need to search for 3 Seelies around the location to unlock the conch, spawn a Luxurious Chest, and a bubble teleport that will lead you to the Hydroculus floating high in the air on top of a waterplank. If you didn’t know how to complete the puzzle, refer to my guide here: Luxurious Chest Puzzle in Salacia Plain.
  1. From the top of the waterplank at #52, glide down to the east to the small isle.
  2. Teleport to Thalatta Submarine Canyon underwater waypoint and absorb any Hunter’s Ray ability near that location. Then, swim east where you can see an Antoine Roger Aircraft being held down by a Seagrass (that you can cut using Water Blade from the Hunter’s Ray). After that, climb the aircraft and activate it to reach the Hydroculus floating high in the air.
  3. Teleport to Marcotte Station waypoint and walk south and you will see a teleport bubble. Use it to reach the Hydroculus on top of a tree.
  4. From the spot the teleport bubble stopped on top of a hill, glide northeast towards the fountain.
  1. Teleport to Fontaine of Lucine waypoint and head to Opera Epiclese and climb the huge HUGE tower there. Another option to not climb is by completing a Fantastical Floating Ball Puzzle in Salacia Plain. After you complete the puzzle, there will be a bubble teleport on top of that underwater dome and it will teleport you to the top of the huge Opera Epiclese tower.
  2. From the tall tower, jump down to the bridge in the middle of Opera Epiclese and glide slowly under the bridge for the Hydroculus.
  3. Teleport to Salacia Plain north underwater waypoint and swim back up southwest towards a ship with a fishing spot. Fish one fish from the spot first to spawn a bubble teleport you can use to reach the Hydroculus on top of the ship.
  1. Teleport to Annapausis south waypoint and head southwest outside the Hydro barrier. In the water, swim back up to the top of the wrecked building and you can see the Hydroculus.
  2. Teleport to Annapausis waypoint (right near the writing) and look to your east for the Hydroculus.
  3. You should already have this one because the bubble teleport will automatically lead you to the Hydroculus in the air during the Narzissenkreuz Adventure quest.
  4. Glide northeast and you will see a Hydroculus also in the air. If you didn’t glide in time to reach the Hydroculus, you can use the Crystal mechanism to create a waterplank so you can walk to the Hydroculus (or just climb the hill and glide to it).
  1. Teleport to the Institute of Natural Philosophy waypoint (right on top of the writing) and swim northwest. Absorb the ability of Armored Crab and use the shockwave to destroy the Bullet Barnacle on the platform above the locked Exquisite Chest.
  2. Teleport back to the same waypoint and swim east to the stairs.
  3. Teleport to Institute’s northeast waypoint and walk south.
  4. From the previous location, follow the route to the north and you will see a closed door across the water. You don’t need a key here and just interact with the mechanism in front of the door to open it.

▌18 Hydroculus in Underwater Area

  1. Teleport to the waypoint that leads to Emperor of Fire and Iron. When arrived, turn around and get in the water and you will see the Hydroculus.
  2. Teleport to Emperor of Fire and Iron northwest waypoint and swim a little bit above.
  3. From the previous location, dive deep down and you will see a hole that leads to an even deeper seafloor. Keep diving below and you will see the Hydroculus.
  4. From the previous Hydroculus location, keep diving downwards and you will see a bubble teleport. Use it to reach the shipwreck on dry land. The Hydroculus is on top of the shipwreck.
  1. Teleport to the Elton Trench waypoint and swim southwest until you see the underwater room. The red barrier means you can’t enter it and you need to complete the Pneumousia Relay puzzle to make the barrier blue so you can enter the room. If you didn’t know how to complete the puzzle, refer to my guide here: Pneumousia Relay Puzzle in Elton Trench.
  2. Get out of the room and swim northeast towards the large leaf with Hydroculus on top of it.
  3. From the previous location, swim north a little bit and dive down when you see lots of shipwrecks. The Hydroculus is behind a breakable rock. You can use Blubberbeast’s ability on the nearest Hydro Bomb near the rock to destroy it.
  4. From the previous location, swim east almost to the surface and you will see a floating buoy. Swim past the buoy and school of fishes and you will see a Hydroculus past the hill near corals.
  1. Teleport to Elton Trench waypoint and swim northwest towards a lot of rocks with a Hydroculus on the edge of it.
  2. Teleport to the Salacia Plain’s farthest southwest waypoint and swim towards the south and you will see the Hydroculus.
  3. From the previous location, dive deeper to the northeast until you notice an abandoned building. The Hydroculus is inside the building and you can enter it from the side.
  4. Teleport to Pale Forgotten Glory Domain and swim northeast. You will see a Hydroculus guarded by Angelica and Medoro (Fairy Knight Twins), but you don’t really need to defeat them and just take the Hydroculus.
  1. Teleport to Salacia Plain’s east waypoint and swim northwest near the underwater waypoint of Institute of Natural Philosophy (but don’t teleport there). A little north from the Institute’s waypoint, dive down and you should see an Armored Crab in front of a breakable wall. Use the Crab’s shockwave to break the wall and unlock a new route and swim inside to reach the Hydroculus.
  2. Teleport to Salacia Plain east waypoint and swim northeast towards the underwater room with a red barrier. Complete the Fantastical Floating Ball puzzle to unlock the barrier and enter the room for the Hydroculus. If you didn’t know how to complete the puzzle, refer to my guide here: Fantastical Floating Ball Puzzle in Salacia Plain.
  3. Teleport to Salacia Plain north waypoint and dive deeper to the south where you can see leaves with Pneuma and Ousia Blocks. Near those leaves is the Hydroculus under a hill.
  4. From the previous location, swim north towards another set of leaves and you will see a Hydroculus on top of the biggest leaf there.
  1. Teleport to Thalatta Submarine Canyon farthest south waypoint and swim southeast to an abandoned building.
  2. Teleport to Thalatta Submarine Canyon waypoint (just below the writing) and dive deeper to the west. You will see a Hydro dome/barrier and you need to find 3 Seele to complete the puzzle and unseal that location. If you didn’t know how to complete the puzzle, refer to my guide here: Hydro Barrier in Thalatta Submarine Canyon.
SoraHoshina
SoraHoshina

A content creator for HoYoverse games, now working as a freelance writer with my knowledge as Genshin Impact Guide Writer in the official gaming forum 'HoYoLAB.'

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