Mods for Minecraft Java
Browse 1,192 free mods for Minecraft Java — popular picks include Tropical World, Sea Legend, Breath Kelp.
Step by step: How to install Minecraft Java mods & modpacks
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Tropical World
All-ocean overworld: a sunlit tropical sea of turquoise water and sandy islands with hidden oases. Built on Isekai API.
Sea Legend
Sea Legend adds a massive multi-phase ocean boss, the custom Leviathan Abyss biome, pirate ships, shipwrecks, lighthouses, exploration maps, unique loot, Abyssal armour and the powerful Fang Blade.
Breath Kelp
Vanilla kelp now acts as a quick underwater breathing source.
Crossing Pyriphlegethon
Boats to cross the infernal fire-flaming river. (Or the nether’s lava oceans)

Sea Shanty Discs
A mod adding sea shanty music discs.
Harpooned
Shoot Harpoon on underwater as wind!

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.
Nautilus Diver
A Vanilla Friendly Solution to the Longest Aquatic Problem!
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!
Pantry
Pantry adds food aging, preservation, cellars, and salt from ocean water.
BuildAPrefix
End the sea of boring prefixes.
Sharks | Shark mobs for ItemsAdder
this addon adds a dangerous shark to your world and more!
Acuatic Practic
It's a mod with strange and funny aquatic beings.
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.
Continental Floating Islands
Explore expansive floating islands separated by vast oceans of void
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.
ICanGamez Better Fishing
This adds new fishing rods, Fishes, Gear, Weapon, And much more aquatically themed! Just a boost in the fishing experience!
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

Survival Sickness
Survival Sickness adds a deeper survival health system to Minecraft. Players can catch diseases from bad weather, mobs, unsafe food, desert heat, freezing, low sleep, wounds, and underwater strain.
Aqua Verse
AquaVerse expands aquatic biodiversity of minecraft
UnderwaterTNT
Want bases to be easier to raid!?
Toads Simple Origins: Fish Bowl
Adds a custom piece of armor that allows custom origins datapacks to add a way to spend more time on land or in the nether without completely removing the challenge of only breathing underwater.
Underwater Torch
Place all torches underwater and they will still emit light Full Fabric 1.20.1 + 1.21.1 + 1.21.4
Aquatic Creatures
Did you know we know most about the space than own ours oceans? I want to make you feel that with this mod
Fishing Aquatica Expanded
Making fishing better one step at a time.
DrownForReal
Drown For Real adds realistic player panic animations when your underwater oxygen bar hits zero. Built for Fabric, it features custom flailing animations that smoothly blend in and out over a fraction of a second using player-animation-lib.
sharky's random ideas
my most random, wierdest and funny ideas
Adrenalin
This mod adds a bit of realism: when you have 2 hearts or less, an adrenaline effect activates for 2 minutes. You run faster, mine blocks quicker, deal more damage, and your screen becomes slightly blurred. After the effect ends, you get nausea for 30 sec
UnderPressure
a realistic underwater experience by simulating the effects of water pressure on players as they dive deeper into the ocean.
Nauseous Lite
Enchanced and customized nausea effects
Stay Flooded!
A mod that prevents air pockets from forming when submerged blocks are destroyed, perfect for an aquatic playthrough :-)
Living Sponge
Drain and Fill the Oceans with Living Sponges!
Lava Gen Tweaks
Tweak the base sea level for lava! Typically starts at -54.
Hendrix's Better Chaos Cubed
Enhance the Chaos Cubed drop with craftable nausea potions, sulfur fire and more!
Underwater Trees
Allows placing and growing tree saplings underwater with optional lightning requirements override.
Use Sea Lantern To Craft Beacon
This mod allows craft a beacon using a sea lantern