Mods for Minecraft Java
Browse 1,127 free mods for Minecraft Java — popular picks include Infinitely Spreading Water, Mako Mermaids Mod, SubMineOfThieves.
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Infinitely Spreading Water
Fill up your lakes, dams, and artificial oceans quickly and easily
Mako Mermaids Mod
Live your H2O dream! Play as Cleo, Emma, Rikki or Mako characters, use elemental powers, and create your own story!
SubMineOfThieves
Subnautica & Sea of Thieves mod
Dweller Nautilus (Horror)
This mod adds a new monster to the ocean. Nautilus Dweller Cursed Drowned Cursed Nautilus Shell and signs
Oceanfront Delight
A compatibility mod between Oceanfront and Farmer's Delight adding new food!
Hybrid Aquatic: Fantastic Fishery
An addon for Hybrid Aquatic that adds various imaginary fish
Sunken Skeletons
Adds the aquatic Sunken Skeleton from Minecraft Dungeons.
Toxic Sky & Plastic Seas
Garbage patches in the ocean near you.
Cyra
A Minecraft mod that reveals the secrets of the ocean!
Subnautic Redstone (Fabric)
Subnautic Redstone allows the player to build with Redstone underwater!
Waterbeds
Introduces a bed that lets you sleep underwater
Brine
Adding much more to the dark depths of the oceans
Ocean Ores
Why not mine in the sea?
Apex Waters
The Great White shark has arrived, you no longer are at the top of the food chain.
RedShark
Allows the logging and tracking of network packets.
Hold Your Breath (in real life)
When you go underwater in-game, you need to hold your breath in real life.
Oceania Kitchen
5 foods per country in Oceania
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.

Pufferz
Want more aquatic animals & plants to fill your aquariums? Well then look no further!
Kraken Mod
A mod that add a Kraken and a structure in the ocean. The geckolib library is needed.
DivineRPG Ocean Spawn Fix
Fixes the long outstanding problem of Ocean mobs from DivineRPG spawning 1000's ALL OVER
Mountain Sea and Continent three(山海大陆) việt hóa
A Vietnamese translation mod for the Douluo Dalu Minecraft mod, translating items, UI, and messages into Vietnamese.
Dungeon Dimension
Create a dimension to a ocean monument
Bathymetry
Visualizes underwater terrain depth through water color.
ArPhEx_DeepestDepths
An addon for the ArPhEx mod, adding in several aquatic features.
The Only Isle
The Only Isle creates a compact, natural island world surrounded by an endless deep ocean, featuring a rich variety of dense biomes for players who enjoy the “limited world” experience. It offers a feel reminiscent of the legacy console editions!
More Aeronautics Void Seas
Makes the Create Aeronautics End Sea spawn in the other two dimensions.
Useful Sharks
I added sharks because mojang won't
UnderDasea
A mod that aims to add life to the oceans.
Aqua
Deep sea creatures.
Ocean Village
This mod will add a new type of village - Ocean Village
Sharkberry's Modified Tetranomicon
This is a modification of Tetranomicon by Syrikalis with certain modules removed to provide better support between itself, Sharkberry's Modified Tetra Extras, and Tetracelium.
Create: Blahaj Factory
Create: Blahaj Factory adds more compat between Just Blahaj & Create to automate your shark friends! (Also Compatible with Only Blahaj)
Aquatic Shulkers
Shulkers generate in deep oceans like clams
Ocean Giants
“Enhances the size and power of aquatic creatures from Alex's Mobs and Ben's Sharks to create epic sea battles.”
SBW Advanced Warfare (Working on another model update))
Adds a lot of very well made vehicles from air to ground to sea