Mods for Minecraft Java
Browse 63 free mods for Minecraft Java — popular picks include YUNG's Better Caves (Forge/NeoForge), Ocean Floor - Clay Sand and Dirt, Underwater Village - Oceanic Structures.
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YUNG's Better Caves (Forge/NeoForge)
Overhauled cave generation, underground lakes and rivers, lava oceans, and more!
Ocean Floor - Clay Sand and Dirt
Spawns patches of Clay, Sand, and Dirt, within the Deep Dcean layer of boring gravel
Underwater Village - Oceanic Structures
Discover a lot of new oceanic structures!
YUNG's Better Caves (Fabric)
Overhauled cave generation, underground lakes and rivers, lava oceans, and more!
Prehistoric Nature
Prehistoric plants, dinosaurs, animals, creatures, mobs, land and aquatic biomes and dimensions with many building blocks
Unnamed Sea
Additional structures for the sea and beach biomes, focusing on an immersive expansion for the vanilla game.
Panthalassa
Panthalassa adds prehistoric aquatic creatures to your world!
Ocean Core
A mod that turns the world into a ocean with islands scattered about
Antique Trading Ship
Adds an antique villager trading ship to all ocean biomes
Aquatic Craft
Passion project that adds an expansive, fleshed-out aquatic dimension.
Underwater Biome
New biomes in the ocean, new features and tech-tree!
Better Cave Worlds
Datapack that creates Cave Worlds, based on the old preset, featuring all biomes, ocean caves, and most structures.
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.
Evil Ocean
Evil Ocean is an world generation mod with custom generation
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!
deep oceans
deep oceans is a mod that adds very deep oceans
Geographicraft
Climate control allows you control climate zones, ocean sizes, biome frequencies, and continent sizes. Make Minecraft worlds into Yourcraft worlds!
Ocean Ores
Why not mine in the sea?
ArPhEx_DeepestDepths
An addon for the ArPhEx mod, adding in several aquatic features.
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.
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!
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.
oceans biomes
Create worlds made entirely of oceans with a simple configuration screen. Choose the ocean biome, tweak depth, and enable or disable islands and ocean structures.

Water World - Atolls
Water World - Atolls is an immersive Minecraft mod (Fabric) that breathes life into ocean biomes by introducing procedurally generated Atoll structures, complete with custom villager AI behaviors, dynamic fishing, and unique blocks to ease water buildin
The Great Ring of Oceanus
A Revamped Ocean Monument is the Gateway to a New Deep Ocean Dimension!
Slime Dimensions
Explore the Slime World through custom portals, discover slime biomes, Liquid Slime oceans, new blocks, mobs, resources, bosses, and progression toward Arcane Slime Tech.
Azúl
An all-new dimension featuring a gigantic ocean surrounding it, and its magnificent fauna—or perhaps just a simple fauna mod?
Travis's Oceanic Biomes
Adds more oceanic biomes to your world!
Lava Ocean
Adds A New Biome Called Lava Ocean!
Aquatica Mod (1.20.1, 1.20) – New Ocean Depths And Biomes
Aquatica Mod introduces a brand-new deep-sea dimension, expanding Minecraft’s underwater with mysterious biomes and unique terrain generation. Features: Access the Deep Sea Dimension by finding a trench in any deep ocean biome. Explore the Abyssal Plains, Hadal Forest, Abyssal Bonefields, Hydrothermal Valley, and Sea Pen Grove Screenshots: Crafting Recipes: Aquatica Mod Download Links For Minecraft […]
Better Single Biome Mod (1.21.4, 1.21.1) – Improves Single Biome World Generation
Better Single Biome Mod makes a few changes to the world generation to make worlds generated in single biome mode a lot better. All biomes are supported except water biomes and mangrove swamp. The mod lowers the sea level, lowers the geode generation level, improves underwater vegetation, increased structure generation, etc. Features: World generation tweaks […]
Oceanic Realms Mod (1.20.1) – Sharks, Crabs And New Sea Biomes
Oceanic Realms Mod adds new biomes, realistic marine animals, and vibrant underwater activity. From group-traveling hammerheads to plankton-feeding whale sharks. Features: Adds sharks (Great White, Hammerhead, Whale Shark…) New large & small fish species: Tuna, Sailfish, Lionfish, etc. Crabs that can be eaten-and even dance to music. Unique spawn conditions across warm, cold, and deep […]
Aquamirae Mod (1.20.1, 1.19.2) – Mysterious Oceanic Adventure
Aquamirae Mod is a mod focused on generating new structures of varying sizes and designs for survival mode enthusiasts. For example, players can discover the Ice Maze in the Deep Frozen Ocean biome. These new structures may or may not contain hostile creatures. Currently, the entities introduced by this mod include Eel, Maw, Mother of […]
Big Fish Mod (1.20.1, 1.19.4) – Better Fishing Experience
Big Fish Mod introduces new fish species into Minecraft's waters, enhancing the fishing and aquatic exploration experience. This mod adds larger, more detailed fish that can be found in various biomes, making the underwater world feel more vibrant and dynamic. Features: New fish species with unique designs. Improved fishing mechanics for better immersion. Aquatic biodiversity […]
Ocean Expansions Mod (1.19.2, 1.18.2) – Enhancing Underwater Exploration
Ocean Expansions Mod expands the ocean biomes through the introduction of new malevolent entities that roam the deepest depth. Granted, the ocean biomes are interesting and enticing with a multitude of unique features. It is, however, not challenging enough for a veteren players. With Ocean Expansions, players will encounter some of the most powerful entities […]
Tax' Deep Villager Mod (1.21.1, 1.20.1) – Explore Underwater Villages
Tax' Deep Villager Mod adds underwater villages to the game. With this mod, players can discover new villages located beneath the ocean, introducing a fresh environment to explore and interact with villagers in an aquatic setting. Features: Adds fully functional undersea villages to Minecraft Expands village exploration into underwater biomes Enhances the diversity of village […]