About UnderTheSea
From ThunderstoreDiving mod that lets you go down using crouch and up using jump.
UnderTheSea
NOTE: This is a variant of Searica's original UnderTheSea with gamepad support and some fixes for the fog issues that could show up while swimming. Will deprecate this package when Searica has time to update theirs.
Diving mod that lets you go up using whatever key you have bound to crouch and up using your jump key.
For managing configuration setting you can use an in-game configuration manager or change configs by editing the config file on disk as this mod has a built in file watcher.
Features
- Configure underwater appearance.
- Hold crouch to dive deeper.
- Hold jump to swim upwards.
- Hold the run key while swimming to slowly accelerate.
- Configurable stamina while resting on the surface of the water.
- Configure stamina drain when resting underwater.
Donations/Tips
My mods will always be free to use but if you feel like saying thanks you can tip/donate.
| My Ko-fi: | 
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Source Code
Source code is available on Github.
| Github Repository: | 
</img> UnderTheSea | |-----------|---------------|
Contributions
If you would like to provide suggestions, make feature requests, or reports bugs and compatibility issues you can either open an issue on the Github repository or tag me (@searica) with a message on my discord Searica's Mods.
Credits
Inspired by BetterDiving mod.
Shameless Self Plug (Other Mods By Me)
If you like this mod you might like some of my other ones.
Building Mods
Gameplay Mods
- CameraTweaks
- DodgeShortcut
- DiscoveryPins
- ExplorersVision
- FortifySkillsRedux
- ProjectileTweaks
- SkilledCarryWeight
- SafetyStatus
- ShowMeTheGoods
- WatchWhereYouStab
Networking Mods
Highlights
From source dataLoaders
Runs on BepInEx.
Footprint
Rated a light load on a server.
Dependencies
Needs 2 other projects installed alongside it.
UnderTheSea on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Valheim servers, for BepInEx servers. We download it from Thunderstore, place it, and restart the server.
- Server side
- Optional on the server
- Server type needed
- BepInEx
- Server load
- light
- Smallest plan we suggest
- Valheim — 4 GB (4 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 0.1.4, released 2025-10-10
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| BepInEx |
From 2 recorded builds of UnderTheSea.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 0.1.4 | 2025-10-10 | n/a | BepInEx |
| 0.1.3 | 2025-10-10 | n/a | BepInEx |
Dependencies
- Required: Jotunn
- Required: BepInExPack Valheim
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run UnderTheSea on a Valheim server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogQuality of life & UI
Small conveniences, tweaks and interface improvements players notice straight away.
Works on a server
From source side supportThunderstore lists server-side support for UnderTheSea as optional: it can run on a server, but isn’t required there.
Compatibility
- Game
- Valheim
- Loaders
- BepInEx
- Runs on
- Serveroptional on the server
- Requires
- One-click install needs a BepInEx server. 2 other projects installed alongside it.
Verified at the source
- ✓ThunderstoreOfficial listing, checked 2026-10-02Open ↗
- ✓AuthorJacobo, as published on Thunderstore
- ✓LicenseNot published by the sourceFree
