Minecraft Java 1.21 Mods
Browse 141 free mods for Minecraft Java 1.21 — popular picks include Over the Sea | Underwater Adventures!, Create Simulated: End Sea Everywhere, Scuba Diving Suit.
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Over the Sea | Underwater Adventures!
Facing new aquatic dangers in a world made up entirely of water and small islands floating on it.
Create Simulated: End Sea Everywhere
Bare bones datapack that adds the End Sea from create simulated to other dimensions. Useful for Skyblock style modpacks.
Scuba Diving Suit
Scuba Gear adds a functional diving suit designed for underwater exploration, explore the ocean with confort in a vanilla way.
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!
Ocean Revamp
New ocean biomes to improve your aquatic journeys in vanilla
Oceanus+Continents
Enables using Oceanus together with Continents
Hybrid Aquatic: Fantastic Fishery
An addon for Hybrid Aquatic that adds various imaginary fish
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.
Beyond The Ocean
A Mod that let´s you explore beyond the oceans of minecraft. New ocean themed planets on a post End level difficulty. New structures, mobs, items and technologies. New adventures and a new story ready to be told.
More Aeronautics Void Seas
Makes the Create Aeronautics End Sea spawn in the other two dimensions.
Sea of Treasure
A roleplaying datapack that adds treasure items from Sea of Thieves
End Sea Everywhere
Bare bones datapack that adds the End Sea from create simulated to other dimensions. Useful for Skyblock style modpacks.
AcidIsland - Toxic SkyBlock
SkyBlock with a deadly twist: the ocean is acid. Survive on your island, but don't fall in the water.
Ash Sailships
Majestic sailships await across your ocean adventure!
Aquatic Fauna Expansion
A NeoForge mod that revitalizes Minecraft's oceans with new creatures, behaviors, and underwater biodiversity.
Aquatica
Aquatica is a Modpack that contains 400+ Mods, and is primarly focus on Create.
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.
Ash Ships
Generates ships sailing across your Minecraft oceans!
Simple Submarines
Adds submarines for underwater exploration.
Aquatic Plugin
This is a Minecraft Plugin wich adds many Ocean and Fish releated things to Minecraft
Kreyc's Waterworld
Custom Modpack, where most things are underwater. If you have phobia and/or afraid of being underwater, this pack is most likely NOT for you. But if you are like me; halv fish, then welcome and enjoy!
better mob : sea expansion
Better Mob: Sea Expansion transforms Minecraft oceans with unique creatures like Whales, Lobsters, Deep Watchers, Coral Golems, and Jellyfish, creating deeper exploration, dangerous encounters, and unforgettable underwater adventures.
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.
Aqua Forge
This is a data pack that will generate an ocean biomes only world.
Aquarius Trilogy
Add a new aquatic dimension featuring some refreshing biomes and structures
Sky Continents
Sky Continents V11 is a datapack add-on for Continents by Stardust Labs that turns oceans into open void airspace for Create Aeronautics-style sky travel.
AquaWindow
AquaWindow — Replaces the wooden floor of all 9 vanilla boats with crystal-clear glass. Perfect for underwater safari and ocean exploration!
Oceanic Plus
Oceanic Plus is a mod meant to improve ocean exploration by making it more rewarding.
Poseidon - Underwater Survival
Shipwrecked and stranded underwater. Breathe, build, and survive in a fully aquatic island world.
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
Lava Oceans
simple datapack that makes all oceans lava
SharkSquad - True Survivors
Survive against Titans in the apocalypse!
Water Enhanced
Expands ocean gameplay with new resources, gear, and aquatic mechanics while staying true to vanilla.
No Oceans
A datapack that removes oceans.