Source-checkedQuality of life & UI

UnderTheSea

by Searica · for Valheim

Diving mod that lets you go down using crouch and up using jump.

53KDownloads
27d agoLast updated
BepInExLoaders
ThunderstoreSource

About UnderTheSea

From Thunderstore

Diving mod that lets you go down using crouch and up using jump.

UnderTheSea

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 (negative values allow for stamina to regen while resting underwater).

Compatability

If you use Valheim Toggle Movement Mod, then make sure to set the Run to Crouch Toggle config setting to false, otherwise you may be crouching whenever you surface from diving.

Donations/Tips

My mods will always be free to use but if you feel like saying thanks you can tip/donate.

| My Ko-fi: | ko-fi | |-----------|---------------|

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

Networking Mods

Highlights

From source data

Loaders

Runs on BepInEx.

Footprint

Rated a light load on a server.

Last update

Its author last shipped an update 27d ago.

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
1.1.0, released 2026-09-18

Game versions by loader

LoaderGame versionsNewest
BepInEx

From 4 recorded builds of UnderTheSea.

Recent builds

BuildReleasedGame versionsLoaders
1.1.02026-09-18n/aBepInEx
1.0.02026-09-16n/aBepInEx
0.1.12025-02-08n/aBepInEx
0.1.02025-01-25n/aBepInEx

Dependencies

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 catalog
Listed on Thunderstore as “Tweaks”

Quality of life & UI

Small conveniences, tweaks and interface improvements players notice straight away.

Works on a server

From source side support

Thunderstore 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.

Verified at the source

  • ✓ThunderstoreOfficial listing, checked 2026-10-01Open ↗
  • ✓AuthorSearica, as published on Thunderstore
  • ✓LicenseNot published by the sourceFree

UnderTheSea, answered

Generated from the mod’s own source data.

Do my players need to install UnderTheSea?

Thunderstore lists server-side support for UnderTheSea as optional: it can run on a server, but isn’t required there.

Which loaders does it support?

BepInEx.

Is it free?

Yes. UnderTheSea is free to download from Thunderstore.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run UnderTheSea on a Valheim server.

Deploy in about a minute from $9.99 a month, then add UnderTheSea in one click.