Mods for Minecraft Java
Browse 1,182 free mods for Minecraft Java — popular picks include Mountain Sea and Continent three(山海大陆), Mermaid origins, Diving Bell for TFC.
Step by step: How to install Minecraft Java mods & modpacks
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Mountain Sea and Continent three(山海大陆)
It includes level enhancement, independent attribute system and damage mechanism, magic modification against enemies and creatures, complete upgrade and development system, and constantly improving building structure for players to explore.
Mermaid origins
This mod implements stuff and features for "Mermod (Forge)" mod.
Diving Bell for TFC
Introduces Items to dive for longer, encouraging underwater exploration.
Jaki Versatile Structures: Sails & Sea
A structures mod to add many ships in your worlds.
Abyssal monster, the horror of the depths.
Dive into the depths of the ocean and discover the Abyssal Monster, the horror of the depths! 🌊👾
No More Ocean Monuments
Removes ocean monuments from the world generation.
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.
IaFHippoPatch
Patches Ice and Fire hippocampus behavior to prevent constant surface floating. Adds depth preference AI making them stay 3-5 blocks underwater naturally while maintaining full swimming mobility and compatibility.
Fish Tanks
Adds fish tanks for your favorite aquatic friends!
Some Like It Dry
Easily reduce or remove oceans, rivers, and lakes from the overworld
Endless Oceans: Adventures (refabricated)
Aquatic animals, fish, landscapes, aquarium building, and more!
Evil Ocean
Evil Ocean is an world generation mod with custom generation
Ocean Villager Trader
adds a new villager the Ocean Trader and his lighthouse structure

BetterVannilaFishes
Dive into a more vibrant and diverse ocean. Re-imagined, re-animated, and re-alive.
Scuba Suit
Let's explore the ocean
Finite Water Control
Makes water a finite resource outside of specified areas (oceans, rivers)
Deep Sea Diving Mod
Dive into the deep oceans without fear of drowning, and defend yourself with your harpoon gun!
Ocean Floor - Patches
Adds patches of clay, gravel, and dirt to a sand ocean floor
Timeless Power
Accelerate time with Pucci's [Made in Heaven] ability from JoJo's Bizarre Adventures: Stone Ocean!
Skeleton Ghost Ship
Adds a skeleton crewed ghost ship that spawns in ocean biomes
Unseaworthy
A mod that makes boats unsuitable for ocean voyages.
Villager Rafts
Adds stranded Villagers drifting across the oceans on wooden rafts.
UndergroundOcean
Makes underground water filled caves from small rivers up to nether-like landscape
fapdos' Aquatic Additions
Adds many new fish creatures and underwater decorations to the game
Wonderous Sea - Endless Ocean
Wonderous Sea adds new under represented marine life to the world of Minecraft!
Create: Warnautics
Create Big Cannons add-on with redstone-launched aerial bombs, multi-bomb cassettes, sea bombs, land mines, cinematic blast effects, and optional Sable ship destruction.
In the depths
A mod that adds a gigantic creature to the deep oceans of Minecraft.
World Alive: Ambient birds and wildlife
Particle based client side ambient birds and wildlife, based on cosy critters and creepy crawlies. Also contains other ambient things such as mirages in the desert, distant players on horseback, distant boats in the ocean.
Create: Aquatic Ambitions & Ultimate Factory compatibility
This mod removes one variant from the overlapping recipes for "Create: Ultimate Factory" and "Create: Aquatic Ambitions".
Ocean's Delight Reforged
Ocean's Delight is an addon mod for Farmer's Delight based around adding culinary content to the ocean!
Illager Battleship
Adds an illager battleship to Ocean Biomes
Liquid Fog Begone
A simple mod that allows you to control how dense the fog is while underwater or in lava.
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!
Ocean's Delight (Polymer Port)
Polymer Port of Ocean's Delight
Waterproof 2: And This Time, It's Serious
Cheaty underwater redstone! Continuation of Waterproof for 1.12.