Under The Seas

Under The Seas

Discontiued For Certain Amount Of Time A new gameplay to minecraft by exploring the darkness of the sea

by
56 Downloads
neoforgeadventurecursedgame-mechanics
Rent Server with this Mod

Screenshots

Whale
Whale
Coralith
Coralith

About this Mod

Under The Seas mod

Its a very lightweight mod were you can explore the sea, but, isn't minecraft sea is normal nothing fun there right? So i added A BUNCH of fishes, sea mammals, hostiles, pasives, and fantasys (it maybe don't make any sense, sorry).
_
Better when using shaders_

Available Versions

Under The Seas 2.0.0 Recreation Updaterelease
MC 1.21.4neoforge
September 14, 2025

How to Install Under The Seas on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.4).

3

Install Mod

Open the mod browser in the dashboard and search for "Under The Seas". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.4

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Under The Seas server crashes on startup – what to do?

Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.4). You can switch loaders with one click in the panel.

Is Under The Seas compatible with neoforge?

Under The Seas officially supports neoforge for Minecraft 1.21.4. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Under The Seas – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Under The Seas consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Under The Seas with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Required

Supported Versions

1.21.4