Mods for Minecraft Java
Browse 45 free mods for Minecraft Java — popular picks include More Useful Copper, Underwater Village, Oceanic.
Step by step: How to install Minecraft Java mods & modpacks
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More Useful Copper
New uses for copper, such as statues, aquatic redstone, and many other tools!
Underwater Village
Discover a lot of new oceanic structures!
Oceanic
Overhauls Minecrafts Oceans and Fishing!
Myths of The Sea
Discover new mythological aquatic creatures, such as the Leviathan, the Kraken, the Hippocampus, and many more!
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.
Aures - Sea Dwellers
Underwater villages and sea traders with random generation. Vanilla style.

Fish Fix
Amends hardcoded sea level assumptions to fix aquatic mob spawning.
Aquatic Breeding
Adds a way for fish and squid to breed, manual and automatic! Fish eat Fish Flakes, Squid hunt for live prey! Breed Tropical Fish of all colors and patterns!
Mako Mermaids Mod
Live your H2O dream! Play as Cleo, Emma, Rikki or Mako characters, use elemental powers, and create your own story!
Cyra
A Minecraft mod that reveals the secrets of the ocean!
UnderDasea
A mod that aims to add life to the oceans.
Realistic Terrain Movement
Movement speed varies by terrain block, boats break in oceans, at mountain peaks high-altitude winds push players around. Designed to encourage the use of external transport mods, particularly Create Aeronautics.
bigfish: ripple
Expand vanilla fishing with new fish, attributes, collection records, bounties, QTE fishing, cooking, placeable food, exploration tools, and progression-focused aquatic gameplay.
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.
Aquatic Plugin
This is a Minecraft Plugin wich adds many Ocean and Fish releated things to Minecraft
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
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.
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.
Water Enhanced
Expands ocean gameplay with new resources, gear, and aquatic mechanics while staying true to vanilla.

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.

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.
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
sharky's random ideas
my most random, wierdest and funny ideas
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.
Aqua Verse
AquaVerse expands aquatic biodiversity of minecraft
FishMating
Bring your underwater world to life by letting fish breed naturally when players throw seeds into water! 🌊🐠✨
DrownedOverhaul – A Deep Sea Threat Awaits
DrownedOverhaul transforms Minecraft’s oceans into a place of genuine peril. This plugin completely reimagines the behavior of Drowned mobs, turning them from passive nuisances into coordinated threats lurking beneath the waves.
Under The Seas
Discontiued For Certain Amount Of Time A new gameplay to minecraft by exploring the darkness of the sea
Enderberry teleport animals or villagers
Overview The Enderberry mod adds a unique item that allows players to bind and teleport animals, villagers, and aquatic creatures to desired locations, simplifying mob logistics.
The Lotus Atoll
The Lotus Atoll is a Minecraft mod that expands fishing with new rod tiers, bait, enchantments, sea creatures, fishing hotspots, passive fishing nets, and underwater pressure mechanics, all while keeping the familiar vanilla feel of Minecraft.
DrownedOverhaul
Drowned mobs can now grab and drag players underwater. A dangerous new twist to ocean survival!
Prisma Craft Mod (26.1.2, 1.21.11) – Conquer Deep Oceans with Prismarine Armor
Prisma Craft Mod expands ocean exploration with new gear, marine creatures, and underwater structures. It turns prismarine into a full equipment tier for weapons, tools, and armor pieces. Players can hunt underwater with spearfishing mechanics, explore ocean ruins, and encounter new sea minibosses in Ocean Monuments. You can also pick up a guide book from […]
Oxidized Aeration Mod (26.2, 1.21.1) – Build Flush Water Elevators
Oxidized Aeration Mod lets bubble column effects from soul sand and magma blocks pass directly through copper grates. Water elevators and downward bubble traps work normally even when copper grates sit above the source blocks. This simple mechanic gives you cleaner floor designs for water tubes, mob grinders, and underwater bases. Features: Lets upward bubble […]
Oddities and Ends Mod (1.21.1, 1.20.1) – Survive with Teleport Crops
Oddities and Ends Mod introduces a broad variety of handy items, unique mobs, equipment, and world mechanics to spice up your survival world. You can barter with a new villager profession, wield heavy two-handed broadswords, cultivate superkelp ecosystems in ocean reefs, and discover new ore deposits deep across the Nether wastes. The mod brings creative […]
Transcending Trident Mod (26.2, 1.20.1) – Riptide Without Rain
Transcending Trident Mod is a Minecraft mod that upgrades the vanilla trident mechanics, making them more versatile and fun-especially for players who love mobility and aquatic combat. Features: Riptide Without Rain: Use the Riptide enchantment even when it’s not raining-just hold a water bucket in your offhand. Great for dry biomes or indoor builds where […]
Wonderous Sea Mod (1.20.1, 1.20) – Endless Ocean
Wonderous Sea Mod adds over 30 new aquatic animals, items, and mechanics to Minecraft, aiming to make survival oceans lively and immersive. Features: Adds 31+ new aquatic animals with spawn eggs. Expands oceans, rivers, and mangroves with diverse wildlife. Includes new items tied to aquatic survival. Focused on livelier oceans for exploration and immersion. Screenshots: […]