A huge part of the Fontaine map has been unlocked with 66 new Hydroculus. Check out all new Genshin Impact Hydroculus locations in the Erinnyes Forest and Morte Region in Fontaine 4.2 here.

Table of Contents

I. Erinnyes Forest Hydroculus Locations

There are 36 Hydroculi around the area of Erinnyes Forest, distributed on the surface, underwater, and underground.

Erinnyes Forest farming route

#1. Aboveground

A large part of Erinnyes Forest area is land, so most of the Hydroculus in this area spawn above the land surface. You can find 28 Hydro collectibles on the ground surface. Here's the farming route in this area, starting from number 151, following the Hydroculus location No.150 in Fontaine 4.1.
Number Description Image
151 Above the Jelly near the Teleport Waypoint in the east of Opera House;
152 A little north of the previous one, in the Pneumousia Storage Box;
153 Continue to head north and activate The Miraculous Antoine Roger Aircraft;
154 Above the jelly at the southern river mouth of the Foggy Forest Path;
155 From the previous collectible, head north toward the waypoint, it is under the small bridge;
156 Head a little east from the previous oculus, it's above floating jellies;
157 It's above the water surface in the dock at the river mouth of the Foggy Forest Path;
160 Climb the mountain peak to collect this oculus;
161 Glide north a little to see the mark and use three keys to open the door to collect the hidden item;
162 Continue to head north to find an energy ball; Move the ball through the water ring to grab the oculus;
163 The next Oculus is on the mountain summit in the north of the previous one;
164 Above the jelly under the teleport waypoint and the Shrine of Depth;
165 Complete the time-limited challenge on the summit in the south of the Weeping Willow of the Lake to grab the hidden Oculus;
167 Above the single rock at the junction in the south of the Weeping Willow of the Lake;
170 Above the summit of the mountain in the south of the Loch Urania;
171 Under the root of the tree in the center of the Weeping Willow of the Lake;
174 On the top of the mountain in the east of the huge lake;
175 Inside the tent;
177 Glide up the wind current and wind rings;
178 Follow the Seelie and let it fill the pond with water to reveal the Hydroculus;
179 In the center of Loch Urania;
180 Above the jelly at the entrance of the Loch;
181 Next to the time challenge on the mountain summit;
182 Open the huge shell;
183 Use Jelly to jump up and pick Oculus;
184 Climb the mountain peak and glide down to grab the collectible;
185 Between two mountains;
186 On the mountain peak in the north of the Harbor.

#2. Underground

On the farming route in the Erinnyes Forest, you will spot some marks of Hydroculus on the minimap but cannot see it in the open world. Those collectibles spawn underground and underwater. Here are those hidden collectibles.

158 Inside a cave behind a breakable wall;
159 In a hole full of water near the previous Oculus;
166 Inside a pearl shell on the bottom of the small pond in the south of Weeping Willow of the Lake;
168 & 169 Collect them inside the underwater tunnel when doing the world quest 'The Wild Fairy of Erinnyes';
172 Break the wall with the cannon to enter the cave in the east of Weeping Willow of the Lake and grab one Oculus;
173 Explore deeper and climb a ladder in the bunker;
176 During the world quest 'The Wild Fairy of Erinnyes';

II. Morte Region Hydroculus Locations

There are 30 Hydroculi scattered around the Morte Region (from number 187 to 216). Half of them spawn abovewater and the rest spawn underwater.
  • 16 Hydroculi can be found underwater (blue lines);
  • 14 Hydroculi spawn on the ground (yellow lines).
Hydroculus locations in the Morte Region

You should farm all Hydroculi aboveground before exploring the underground map for the rest of these collectibles.

#1. Aboveground

Let's start from the east of the West Slope of Mont Automnequi.

Number Description Image
188 Teleport to the east of the West Slope of Mont Automnequi and pick it above water;
189 Head north and climb the highest summit of the mountain to grab one Oculus;
192 On the top of the tower;
197 On the mountain peak on an island in the south;
198 Head south to a patch of yellow flowers and a jelly, use the jelly to jump high and pick the Oculus;
200 Near the waypoint in the southwest of Fort Charybdis Ruins, on a broken wall;
204 At the top of the wind current in the northeast of Fort Charybdis Ruins;
201 In the north of the previous one, above the water;
202 In the center of the largest island, above a jelly and a wind current;
206 Under the cane in Lumidouce Harbor;
207 Go deeper into the Lumidouce Harbor, activate the device to summon the jelly;
208 On the broken bridge in the east of Poisson;
209 Head northeast to the location of a jelly;
212 Inside a small room under the Statue of Seven.

#2. Underwater

There are 16 underwater collectibles in Mont Automnequi.

Number Description Image
187 Solve the puzzle to open the seal;
190 Under the underwater bridge near the sea in the east of Slopes of Mont Automnequi;
191 In the east of the previous Oculus;
193 Inside the underwater room in the east of the southern underwater teleport waypoint;
194 On the eastern edge of the ruin tower;
195 In the south of the previous Oculus;
196 Swim to the northeast of the previous collectible;
199 Use the waypoint in the south of Fort Charybdis Ruins to get close to the mark of the Oculus, then head east toward the cave by the sea to grab it;
203 Find the energy flow mechanism inside an underwater room to find the Oculus;
205 Inside the broken ship in the northeast of Fort Charybdis Ruins;
210 From the Statue of Seven, swim to the west enter the ruin, and find the energy flow mechanism;
211 From the waypoint in the south of the previous Oculus, swim to the east and find it inside a room;
213 Behind the Hydro barrier in the main room with a Looking Glass at the northern end of the ruin.
214 Behind the energy flow mechanism in the north of the previous collectible;
215 From the waypoint in the Fort Charybdis Ruins, swim north and find a breakable stone;
216 At the top of the gear in the main room of the underground ruin in the center of the largest island.

Those are all 66 new Genshin Impact Hydroculus locations in the new map of Fontaine 4.2. There are 216 Hydroculi released in Fontaine up to now.

>>> Also Read: Fontaine 4.2 | Where To Farm & Buy Genshin Impact Lakelight Lily?