

Reef Redux (NeoForge 1.21.1 Port)
This mod improves coral reef world generation by replacing the flat vanilla reefs with natural rocky formations.
Instead of coral growing directly from a flat seabed, reefs generate on rocky outcrops that create more varied and natural-looking underwater terrain.
Features
Rocky coral reefs Coral now generates on stone formations instead of flat ocean floors.
Natural shapes Reefs can include caves, arches, and uneven terrain.
Vanilla coral support Vanilla coral types still generate normally on the new reef structures.
Config option
disableVanillaCorals(default: false)
Allows disabling vanilla coral reef generation.
Port Information
This is an updated port of Reef Redux for Minecraft 1.21.1 on NeoForge.
Original mod by codyhuh:
https://modrinth.com/mod/reef-redux
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as neoreefredux-1.0.jar — drop this file into the mods folder
- Download size: 79 KB
- Download link checked 7 Sept 2026 — working
These come from our own check of the pack file, not from the source page.