Exploring the beautiful region of Fontaine in Genshin Impact continues to be one of the most rewarding adventures for Travelers in 2025. As the nation associated with Hydro and ruled by Focalors, the Hydro Archon, Fontaine offers unique underwater exploration opportunities that remain unmatched in the game. For those looking to maximize their Statue of the Seven offerings, collecting all 17 Hydroculus in the Belleau Region is essential - and surprisingly accessible even for newer players.

The Romaritime Harbor Route

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Start your Hydroculus hunt at the Statue of the Seven in Romaritime Harbor. From there, glide southwest toward a ship where you'll find your first Hydroculus perched on top. The positioning makes it easily visible but requires precise gliding to reach.

Return to the Statue and you'll notice another Hydroculus conveniently positioned right in front. This one requires using the Aquabus system - if no bus is in sight, simply approach the nearby chair and select 'wait for the aquabus.' Once it arrives, hop aboard to collect this floating gem.

Mountain and Domain Collections

For the next collection point, teleport to the Denouement of Sin Domain. A challenging climb awaits as you make your way up the mountain, but the Hydroculus at the summit makes it worthwhile. The view from this vantage point is also spectacular, offering a panoramic vista of Fontaine's waterscape.

Next, head to the underwater waypoint southwest of the West Slopes of Mont Automnequi (the one that leads to the Emperor of Fire and Iron boss). Once there, swim northwest to find another Hydroculus hidden beneath the waves. The underwater ambience in this area is particularly enchanting, with luminescent flora creating a magical atmosphere.

Island and Ship Discoveries

After completing the underwater collection, use the ground-level waypoint southwest of West Slopes of Mont Automnequi. Walk southeast to a small island where you'll find a Hydroculus guarded by a Hilichurl Rogue. This encounter adds a bit of combat challenge to your collection journey.

From this spot, continue southwest to another ship. Similar to the first vessel, this ship has a Hydroculus positioned on its highest point. The naval architecture of Fontaine's ships continues to impress even in 2025, with their intricate designs reflecting the region's technological advancement.

Scaling Heights for Hidden Treasures

Return to the waypoint southwest of the West Slopes of Mont Automnequi and climb northward up the mountain. The elevation provides access to another Hydroculus at the peak. From this position, glide eastward toward a small house roof where you'll discover a teleportation bubble. Use this mechanism to reach a floating Hydroculus suspended in mid-air.

Now teleport to the waypoint north of the West Slopes of Mont Automnequi. Jump down and enter the aquabus tunnel to find a Hydroculus hovering above the water. Pro tip: use a tall character like Zhongli or Alhaitham to jump and glide toward this Oculus more easily.

Windmill and Cave Explorations

Return to the previous waypoint and tackle the mountain to the southeast. At the summit, you'll encounter a windmill mechanism - activate it with an Anemo skill to create an upward wind current. This will allow you to float up and collect the elevated Hydroculus.

For a change of scenery, use the underground waypoint in Poisson and venture deeper into the cave until you reach a pool. Dive in to discover another Hydroculus beneath the surface. The lighting effects in these subterranean waters have been enhanced in recent updates, making exploration even more immersive.

Shipwreck Challenges

From the pool, climb back to ground level and continue further into the Poisson cave until you reach an enormous ship. Scale this impressive vessel to claim the Hydroculus at its highest point.

Teleport again to the underground Poisson waypoint, but this time turn around and use the bubble teleportation to reach the above-ground area. Here, you'll need to climb another shipwreck to reach a Hydroculus. Be cautious of the many holes in this deteriorating structure - a single misstep could send you plummeting back to square one.

Final Collection Points

From atop the shipwreck, glide northeast to a tall building featuring a Pneumousia Relay puzzle on the ground. Solving this puzzle creates a teleportation bubble that will transport you to the building's roof where another Hydroculus awaits.

While still on this building's rooftop, glide northwest to collect yet another Oculus positioned on a small house near the shoreline. The contrast between Fontaine's grand architecture and humble dwellings makes for interesting visual storytelling.

For the penultimate Hydroculus, head southwest and dive into the water. Swim in the same direction to locate an Oculus nestled among the vibrant coral formations. The underwater ecosystem designs in Fontaine remain some of the most detailed in the game.

The Final Challenge

The last Hydroculus in Belleau Region presents the greatest challenge, hidden in an underwater ruin south of the East Slopes of Mont Automnequi. To reach this location, teleport to the Waterfall Wen Domain and head east to the Waverider Waypoint. Dive into the waters and swim westward to enter a submerged cave.

This area is connected to the "Search In The Algae Sea Quest," so completing this storyline first will significantly ease your access to the final Hydroculus. The puzzle mechanisms have been slightly adjusted in the 4.8 update, but the fundamental approach remains unchanged.

People Also Ask

How many total Hydroculus are in Fontaine?

There are 270 Hydroculus scattered throughout the entire Fontaine region, with 17 specifically in the Belleau Region covered in this guide.

Do I need to complete any quests to collect all Hydroculus in Belleau?

Most Hydroculus in Belleau can be collected without quest prerequisites, except for the final one which is easier to access after completing the "Search In The Algae Sea Quest."

What rewards do I get for collecting Hydroculus?

Offering Hydroculus to the Fontaine Statues of the Seven increases your stamina capacity and provides various rewards including Acquaint Fates, Primogems, and Shrine of Depths keys.

FAQ

Q: Is underwater exploration still limited by oxygen in 2025?

A: Yes, the Fontaine underwater oxygen mechanic remains in place, though several gadgets have been added to the game that can extend your submersion time.

Q: Can I collect all Hydroculus before completing the Archon Quest?

A: You can collect most Hydroculus immediately after gaining access to Fontaine, though some areas may be locked behind story progression.

Q: What's the best character to use for Hydroculus hunting?

A: Characters with exploration talents like Yelan (sprint stamina reduction), Kazuha (mid-air jump), or the newer Hydro character Navia (extended underwater breathing) are particularly useful.

Q: Has HoYoverse added any tools to help track remaining Hydroculus?

A: Yes! The Hydroculus Resonance Stone craftable gadget has been improved in version 4.7 to provide more precise locations, making collection much more convenient than in previous years.

Q: Do I need the Waverider for all underwater Hydroculus?

A: While not all underwater Hydroculus require the Waverider, having access to it significantly eases navigation between collection points, especially in the southern areas of Belleau Region.