Deep Waters
Deep Waters adds a mermaid dimension and underwater biomes to Forge and NeoForge worlds, with boss fights and water-friendly decorations.
What it does
The mod sends players to a separate underwater dimension with four biomes, populated by aggressive neutral fauna and mermaids. Water-friendly decorations, including underwater doors, let builders work below the surface, and underwater farms allow crops to be grown there. Some secrets are hidden in the dimension. Its boss is summoned with a crowned jellyfish item, which is found at a shrine, and the summon is used at an altar.
Players who want more than vanilla underwater play can use the mod on client and server, since both sides need it. Geckolib is required and must be installed alongside it. Files are published for Forge and NeoForge across 13 release versions, and the Forge file for 1.20.1 and the NeoForge file for 1.21.11 are both dated 2025-12-13. The license is All rights reserved, so the mod is not open source, and the code is kept private by the author.
Key features
Mermaid dimension
A separate dimension with four biomes and mermaids, reached as an extension of the survival water setting.
Underwater farms
Crops can be grown in underwater farms, and water-friendly decorations such as underwater doors support builds below sea level.
Boss and summoning
The boss is summoned with a crowned jellyfish item found at a shrine and used on an altar, with an amethyst chandelier lit by a flame opal gem.
Hidden secrets
The dimension includes several secrets for players to find while exploring its biomes.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x11 of 11 versions with builds
1.20.x1 of 1 version with builds
1.19.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Underwater survival
Players in survival worlds can build farms and bases below the surface using the water-friendly decorations.
Who it’s for: Players who want a water dimension with creatures and a boss, and server owners who run survival or adventure worlds where the mod can be installed on both sides.
Questions
Does Deep Waters require another mod?
Does the server need Deep Waters?
Which game versions does Deep Waters support?
In the catalog
Deep Waters is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 19,862 mods support Minecraft 1.21.11.
More from ElliemoreCasp
Similar mods
What the author says
The dimension is meant to complement your survival as an water creature. The mod does not add the water creature mechanic, only the environment. TIP: You can use Origins for this, for example.
Official listing
- Modrinth page
- modrinth.com/mod/deep-waters
- Owner
- ElliemoreCasp
- Published
- 2025-02-19
- Updated on Modrinth
- 2025-12-13
- Facts verified
- 2026-10-15