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Mod

UnderTheSea

Free activation
Start a server for 24 h for free
UnderTheSea can be installed in the panel in 2 clicks No payment and no card
Activate a free server
After activation go to Server panel → Addons, search for UnderTheSea and click Install. We will match the version to the engine.
Like it? Extend from $7.55 / month.

UnderTheSea is a Valheim diving mod that remaps movement for smooth underwater control. Hold crouch to dive, jump to rise, and run to slowly accelerate while swimming. Tune underwater visuals plus stamina usage or regeneration at the surface and below.

Configure everything in-game with a config manager or by editing the watched config file on disk. Includes notes for using UnderTheSea alongside Valheim Toggle Movement Mod. 🌊

Mod versions

You will choose the version when installing in the server panel, in the Addons section.

1 version
VersionValheimEngineReleased
1.1.0 Latest
Valheim — Engine — Released 18.09.2026

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