Fabric Mods for Minecraft 1.21
Browse 40 free Fabric mods for Minecraft 1.21 — popular picks include Underwater Village - Oceanic Structures, YUNG's Better Caves (Fabric), Aquatic Additions.
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Underwater Village - Oceanic Structures
Discover a lot of new oceanic structures!
YUNG's Better Caves (Fabric)
Overhauled cave generation, underground lakes and rivers, lava oceans, and more!
Aquatic Additions
Aquatic Additions completes the vanilla turtle armor and adds an upgraded version to enhance underwater exploration
Create: Stranded at Sea
An ocean survival, centered around create automation, adventure, and a fully integrated economy system.
Unnamed Sea
Additional structures for the sea and beach biomes, focusing on an immersive expansion for the vanilla game.
Aetherial Islands
Datapack that creates a whimsical floating islands world, with mountains, rivers, and floating ocean bowls!
One Survival Island
Datapack that creates a Single Survival Island in an Infinite Ocean World
Big Globe - YUNG's Better Ocean Monuments Compatibility
Data pack to generate YUNG's Better Ocean Monuments in a Big Globe world.
Better Cave Worlds
Datapack that creates Cave Worlds, based on the old preset, featuring all biomes, ocean caves, and most structures.
Revamped Floating Islands
Datapack that creates Floating Island worlds based on the old preset, with all biomes and structures. Additionally featuring floating oceans and rivers.
No More Ocean Monuments
Removes ocean monuments from the world generation.
Deeper Oceans: Refabricated
Continuation of Apollo's Deeper Oceans mod for Fabric. Oceans 3x as deep as vanilla, with adjusted Ocean Monument placement.
Temperature Bands
Modifies world generation to place biomes into repeating temperature bands. Compatible with most worldgen mods. Now with humidity based on proximity to river and/or ocean too!
Cyra
A Minecraft mod that reveals the secrets of the ocean!
Repurposed Structures - Better Ocean Monuments Compat Port
TelepathicGrunt’s Repurposed Structures - Better Ocean Monuments Compat Datapack ported to Forge, NeoForge, Fabric and Quilt!
d3v_c's Terrain Overhaul
Fabric worldgen overhaul for 1.21.11: taller mountains, deeper terrain, rebalanced biome climate zones, more natural caves, and improved underwater shaping for realistic Overworld landscapes.
Single Island Generator
A Minecraft world generation mod that adds an Island world type, generating an ocean-only world with one randomly generated survival island.
oceans biomes
Create worlds made entirely of oceans with a simple configuration screen. Choose the ocean biome, tweak depth, and enable or disable islands and ocean structures.
Exodus 14:27
Fixes MC-278019 bug to restore sea level in superflat worlds.
Oceanic Plus
Oceanic Plus is a mod meant to improve ocean exploration by making it more rewarding.
oceanmanman
Oceanmanman is a modpack that enhances Minecraft with visual tweaks, new structures, and quality-of-life improvements. It keeps the experience vanilla-friendly, adding fun non-game-breaking changes. Inspired by NIKO YAPS' Modpack. Full credit to Mod devs
Water Enhanced
Expands ocean gameplay with new resources, gear, and aquatic mechanics while staying true to vanilla.
The Abyss Ocean
Reshape the entire world generation with this mod, the entire world turns into a deep-abyss ocean. Structures like Villages, Trial Chambers, and Strongholds rarely spawn.

Realistic Oceans
Adds realistic & deep oceans to minecraft
No Boats
This mod removes all boats from Minecraft, forcing you to travel across water the slow way. It makes oceans feel bigger and exploration harder since you can’t just zip across huge distances anymore.
Aqua Verse
AquaVerse expands aquatic biodiversity of minecraft
Unwrecked Ships Mod (1.21.11, 1.20.1) – Vanilla Shipwreck Structures Repaired
Unwrecked Ships Mod revitalizes Minecraft's oceans by adding fully intact ship structures to the game. Unlike the usual shipwrecks, these functional and complete vessels serve as ready-made bases or exploration hubs. Features: Instead of broken ruins, ships now appear intact and seaworthy, naturally generating in your world Adds 7 ship types using vanilla wood combinations […]
Cobblemon Extra Structures Mod (1.21.1, 1.21) – New Landmarks
Cobblemon Extra Structures Mod adds new exploration structures and additional ways to encounter Pokémon. Features: New major structures such as: Bell Tower, Sea Mauville, Desert Ruins, Cave Island, Ancient Tomb, and The Under. Screenshots: Cobblemon Extra Structures Mod Download Links For Minecraft 1.21.1, 1.21 Fabric Version: Download from Server 1 – Download from Server 2 […]
Countered's Settlement Roads Mod (1.21.10, 1.20.1) – Generates Roads Between Villages
Countered's Settlement Roads Mod will add roads to Minecraft that will connect villages. These paths perfectly complement the game's atmosphere, as if the villagers themselves walk between villages to exchange items. Now villages are not isolated from each other, and during world exploration, you can simply walk between villages. Even among oceans and seas, buoys […]
When Dungeons Arise Seven Seas Mod (1.21.10, 1.20.1) – Conquer The Depths
When Dungeons Arise Seven Seas Mod is an addon for When Dungeons Arise, introducing massive ocean-themed structures to explore. This expansion enriches the underwater and maritime experience with new locations, challenges, and treasures, making ocean exploration more rewarding. Features: Works alongside When Dungeons Arise, enhancing world generation without disrupting the original mod’s balance. Discover sprawling […]
Lithosphere Mod (1.21.8, 1.20.1) – Realistic and Detailed World Generation
Lithosphere Mod is a mod that enhances world generation, creating more realistic and cinematic landscapes. It introduces continents of different sizes separated by oceans, with occasional islands. The coastlines are more gradual with wide beaches, steep cliffs in mountainous regions, and smoother, higher peaks compared to the default. Additionally, rivers are less common but form […]
Better Single Biome Mod (1.21.4, 1.21.1) – Improves Single Biome World Generation
Better Single Biome Mod makes a few changes to the world generation to make worlds generated in single biome mode a lot better. All biomes are supported except water biomes and mangrove swamp. The mod lowers the sea level, lowers the geode generation level, improves underwater vegetation, increased structure generation, etc. Features: World generation tweaks […]
No More Grass And Kelp Mod (1.21.1, 1.20.1) – Removes Grass & Kelp From World Generation
When building underwater structures in the ocean, you will have to manually remove a lot of kelp plants. Similarly, when building on plain terrains, you will have to clear out grass from the ground. Both of these can be inconvenient at times. Do you want both grass and kelp to be removed from the game? […]
Can't Touch Water Mod (1.21.8, 1.20.1) – Water Kills On Contact
Can't Touch Water Mod is a fun challenge mod that tests your survival limits. The mod adds a simple new change – water will kill you instantly upon contact. Swimming and ocean exploration are key elements of the survival gameplay. And with this mod installed, those elements of the game are restricted. Features: Adds a […]
Partnership Mod (1.21.1, 1.20.4) – Drive Ships With Friends
Are you a fan of ships and ocean exploration? Do you want to see items in your game that are themed around water travel? If your answer is yes, the Partnership mod is for you. Partnership Mod introduces some new items themed around boats and ocean travel. This includes some costumes, lifebuoys, a kayak that […]
Larion World Generation Mod (1.21.4, 1.20.1) – Fantasy-inspired Landscapes
Larion World Generation Mod transforms the overworld with fantasy-inspired landscapes, creating new terrain, including extended oceans separating distinctive landmasses, towering mountains, and long, winding rivers carving through the landscape. The world’s height is increased for deeper caves and higher peaks, creating a new sense of exploration. Features: A world divided into landmasses with many islands […]