Mods for Minecraft Java
Browse 146 free mods for Minecraft Java — popular picks include bigfish: ripple, resurfaced, Blunderbombs.
Step by step: How to install Minecraft Java mods & modpacks
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bigfish: ripple
Expand vanilla fishing with new fish, attributes, collection records, bounties, QTE fishing, cooking, placeable food, exploration tools, and progression-focused aquatic gameplay.
resurfaced
Making underwater exploration easier in a simple way
Blunderbombs
Bring the chaos of Blunderbombs from Sea of Thieves into Minecraft Comes in both damaging and non-damaging variants!
Pets Load Chunks
Loads the chunks tamed pets are in, enabling use of them as chunk loaders while they're sitting around and fixing teleportation across oceans.
Water Depth Fog
Underwater fog gets darker and closer the deeper you dive — a purely visual atmosphere mod for deep-ocean gameplay. Client-side.
No Air Mining Penalty
removes the default mining speed penalty when the player is underwater or not standing on solid ground
Aquatic Plugin
This is a Minecraft Plugin wich adds many Ocean and Fish releated things to Minecraft
Ore Minus
Customize Minecraft ore spawn rates by biome. Easily set multipliers for vanilla and modded ores (e.g., 2x diamonds in deserts, zero coal in ocean). Essential modpack ore distribution tool.
Wearable Lanterns (Unofficial Port)
Wearable Lanterns is a vanilla-friendly mod that lets you equip lanterns for hands-free lighting while adventuring, mining, and exploring dark caves. It also includes waterproof encased lanterns for underwater exploration.
Monster Origins
(WIP) Minecraft 1.20.1 (and now 1.21.1) / Fabric addon for Origins that adds four origins Arachne (a humanoid spider), Medusa (a gorgon), Harpy (a storm-wind bird-woman), and Mermaid (a singer of the deep) each built around a different playstyle
UnderWater Pressure
This mod adds water pressure mechanic
Grassidium
Makes plants alive! Grass, flowers, underwater, and modded plants spread and grow dynamically based on their environment.
Fish Rework - Fishing
A plugin that reworks the fishing mechanic, by fishing up unique sea creatures instead of normal fish. Custom drops, items, armor, weapons, skill progression, recipes, custom GUI, advancements, artifacts and more.
Exodus 14:27
Fixes MC-278019 bug to restore sea level in superflat worlds.
Better Turtle Helmets
Reworks the turtle helmet to provide continous water breathing underwater at the cost of losing durablility overtime.
Redstone Underwater
Redstone can now be waterlogged!
Drown Panic
"An immersive mod that enhances survival atmosphere underwater with a wide screen vignette (tunnel vision) and realistic heartbeat sounds when drowning."

Simple Mermaid Tails
This Mod adds Mermaid Tails, thats it. This is kinda a fork from my Mako Mermaids Mod but without the Powers etc.
Depths Reborn
This mod adds the Nautilus. Work will also be done to add some aquatic mobs and mob votes, such as the crab and The Monster Of The Ocean Depths, as well as others.
Old Continents Slider
Remember when Minecraft had real oceans? Until 1.6.4, the world was big continents floating in a huge ocean. Since 1.7.2, it's an infinite landmass with elongated lakes.
Fruit of Thieves
A mod that adds fruit from sea of thieves
ClimateCraft
Adds climate change mechanics. Building, mining, and smelting emit CO2, plants absorb it. Keep the environment in balance or suffer sea level rise, droughts, and wildfires!
Total Water World
Raises sea level to y=200 & removes all non-ocean biomes.
Create: Flood Pulley
An addon for Create that adds a variant of the Hose Pulley without the bottomless supply mechanic, so you can drain perimeters and fill whole oceans.
Lunar Origins: Wopol
An aquatic Origin for the Origins mod. Requires Lunar Origins Core.
Water Enhanced
Expands ocean gameplay with new resources, gear, and aquatic mechanics while staying true to vanilla.
Poseidon - Underwater Survival
Shipwrecked and stranded underwater. Breathe, build, and survive in a fully aquatic island world.
Splinecart Aquatic
This is a small mixin designed to be used with the Splinecart mod. It makes Splinecart track ties able to be placed in water, that way you can make under water roller coasters or waterslides.
Boats On Ice
Do you wish that boats in Minecraft were faster? With this Mod, boats in water act as if they are on ice! No more paddling around an ocean for hours, its time for warp speed!

Blue Oceans
Blue Oceans is a technology-adventure mod designed to enhance the player's gaming experience by incorporating real-life items.It also includes some magical items.
ICanGamez Better Fishing
This adds new fishing rods, Fishes, Gear, Weapon, And much more aquatically themed! Just a boost in the fishing experience!
Harpooned
Shoot Harpoon on underwater as wind!
Origins: Flying Fish
Flying Fish — fragile aquatic race with 5 ❤️. Breathes underwater (Oxygen resource, 0–100) but suffocates on land. Has built-in elytra, water blades, high swim speed. Weaknesses: fire, slowness on land, oxygen drain in Nether/flight/deserts.
Pantry
Pantry adds food aging, preservation, cellars, and salt from ocean water.
Breathe Underwater
A simple mod to let you breath under water without any potion effect Theres many dangers already, dont let the sea be other
Fishing Aquatica Expanded
Making fishing better one step at a time.