CurseForge · Minecraft mod
UndergroundOcean
Makes underground water filled caves from small rivers up to nether-like landscape
Quick answer
Which UndergroundOcean release should I use?
UndergroundOcean underground_ocean-1.2.jar targets 1.11.2. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is UndergroundOcean required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does UndergroundOcean underground_ocean-1.2.jar need?
underground_ocean-1.2.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add UndergroundOcean without breaking your instance.
Built for UndergroundOcean underground_ocean-1.2.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use underground_ocean-1.2.jar. It targets 1.11.2; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside underground_ocean-1.2.jar. It opens that exact file at the source.
About this project
What does UndergroundOcean add?
Decorative world generation mod that adds large, partially filled by water caves to any dimension.
With default configuration it adds to normal world pretty shallow, but very wide empty spaces at about 18-26 world height and water level at 22.

Many options are configurable, allowing up to Nether-like landscape under your world.
Project description from CurseForge.
Pick your setup
UndergroundOcean by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.11
1 loader build1.10.2
1 loader build1.9.4
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
UndergroundOcean versions and loaders
underground_ocean-1.2.jar
5 Oct 2017
underground_ocean-1.11-1.2.0.0.jar
12 Dec 2016
UndergroundOcean-1.1.0_develop_a69b2f0_alpha.jar
9 Sept 2016
UndergrounOcean-1.0.1-b1.jar
24 Jul 2016
UndergrounOcean-1.0.0-b1.jar
23 Jul 2016
Looking for an older file? The official CurseForge project page is in Resources.