Minecraft Java 1.20 Mods
Browse 248 free mods for Minecraft Java 1.20 — popular picks include Marine biology, Alex's Mobs - Ben's Sharks Consistency (Discontinued), Seafarer[Fabric].
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Marine biology
A mod that diversifies the oceans and adds several marine mammals from the cetacean family. Currently, the largest is the humpback whale. There is also a bowhead whale that you can ride. Smaller ones include the beluga whale, the pilot whale,
Alex's Mobs - Ben's Sharks Consistency (Discontinued)
Consistency in some items between Alex's Mobs and Ben's Sharks
Seafarer[Fabric]
A port of the Seafarer[Forge] Version. This is a mod that aims to improve the Minecraft Oceans and its surroundings.
Leviathan
A new oceanic mob for Minecraft 1.20+
Sea eater: ocean horror
something unknown fell into the ocean
sirens of the deep
have fun exploring the deep sea invite your friend to explor the vast and deep oceans of Minecraft live your best life as a mermaid you wont be harmed by monsters because you are so beautiful customize your tail make it different colors
Aquaticworld
This mod adds 5 new creatures to diversify the oceans.The mod will also add 9 new structures and their prehistory.The mod is based on the game "Subnautica"
Jeff The Landshark
Bring home Jeff the Landshark as a fully interactive companion with unique abilities, progression, collectibles, armor, weapons, blocks, and much more custom features.
Sea Core Balance & Utilities
A balance and utility addon for Mine Mine no Mi and CartAddon, focused on cleaner PvP, reworked abilities, improved fruit terrain effects, bosses, crates, and server-friendly config tools.

Faentum's Deep Sea Expansion
Deep Oceans are no more safe, Dare to Face the Abyss!
Sage's Ocean Adventure Pack
Build a functioning ship and explore the seven seas as a Pirate, or explore the depths of the ocean as a mermaid or another creature. Build an empire or a secret base. This pack centers around the ocean.
The Great Ring of Oceanus
A Revamped Ocean Monument is the Gateway to a New Deep Ocean Dimension!
Spiral of Jujutsu
The Jujutsu sorcerers are stranded on a island where cursed waters hide sea monsters and nighttime mobs grow larger every day. With limited resources, they must survive, fight, and uncover the curse before the island overwhelms them.
Horn Of The Sea
The Horn of the Sea is a mystical artifact forged by combining the power of land and sea. Crafted using a Goat Horn and the rare Heart of the Sea, this enchanted horn can be used only in ocean biomes to summon 2 dolphins to assist your needs!
Azúl
An all-new dimension featuring a gigantic ocean surrounding it, and its magnificent fauna—or perhaps just a simple fauna mod?

StaffCraft: Evolution
StaffCraft: Evolution adds 10+ unique magical staffs with insane abilities. Freeze enemies, bend reality, summon meteors, control the ocean and more! Collect shards from mobs, craft powerful staffs, and battle friends in the arena with the /vs system. ⚔️
Sharks with Lasers
A minecraft mod for Evil villains that mean Business
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.
Sea Urchin
This mod adds a sea urchin. Sea urchin can drop a item. A Item can be used for cooked sea urchin
Oceanic Slime
Retextures the slime to aquarium like mob
Acuatic Practic
It's a mod with strange and funny aquatic beings.

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.
DrownedConduitSpawnBlocker
Prevents Drowned from spawning near conduits for easier underwater building.
Big Globe x Ben's Sharks
A datapack adding compatibility between the Big Globe and Ben's Sharks mods, making the mobs added by Ben's Sharks spawn in Big Globe worlds.
Travis's Oceanic Biomes
Adds more oceanic biomes to your world!
Misanthrope Gas Engine
Atmospheric simulation, simulating gas pressure, all real life gasses, real thinning atmosphere, and reworked breathing to reflect, this affects all non-aquatic mobs
Mobs of Mythology Kobold Outpost (More integrated version)
A more integrated version of Kobold Outposts by Tierbee, with support for Quark and Upgrade Aquatic!
Nautical Retextures
A little pack that changes the textures of almost all aquatic and semi aquatic mobs in the game with a "Fresh" and "Realistic" take on the seas
Remove Armor Enchant 实用附魔与爱的魔药
Added a few powerful enchantments to the original version, helpful for combat and underwater exploration.本模组添加了两种附魔脱甲与炸塘,让你在战斗和环境破坏中有更多玩法。
Cobblemon Seavls Bizarremons Resource Pack (1.21.1, 1.20.1)
Cobblemon Seavls Bizarremons Resource Pack expands the main Cobblemon mod with over 30 weird and wonderful custom creatures. It brings totally new evolutions and regional forms to your game. You can find these strange monsters hiding in the nether, frozen oceans, and jungles. The pack also generates giant floating cities in the deep ocean full […]
VisualAddons Shaders (26.2, 1.20.1) – Screen Damage and Underwater Blur
VisualAddons adds neat visual effects to your Minecraft world. It mixes realistic and fantasy styles to give the game a fresh look. This shader changes how water behaves when you swim and shows new effects when you get hurt. Features: Damage Effects: Adds special screen effects when you take damage from mobs or falls. Blurs […]
OTTERBOAT Resource Pack (1.20.1) – Adorable Swimming Otters Instead
OTTERBOAT Resource Pack replaces the standard wooden boats in Minecraft with adorable swimming otters. It gives you a fun and unique way to travel across the oceans and rivers of your world. Features: Otter Models: Replaces all standard wooden boats with custom animal shapes. Works perfectly with OptiFine to display the new textures correctly. Features […]
Hopo Better Underwater Ruins Data Pack (26.2, 1.20.1) – Cities In The Deepest Part Of The Ocean
Get ready to explore the Hopo Better Underwater Ruins Data Pack, this time there is so much to see, loot, surprises, mobs, structures and archeology, be sure to go prepare!Find the cities in the deepest part of the ocean, and explore all the different types of rooms with different types of drowneds. Oceans are more […]
Fresh Animations Resource Pack (26.2, 1.20.1) – Texture Pack
Fresh Animations Resource Pack gives the vanilla mobs a whole new set of animations, so they move the way they do in the game's own trailers. The pack keeps the default textures and only swaps the models and the motion behind them. Villagers, illagers, farm animals, ocean mobs and nether mobs all move with more […]
New Style Squid Resource Pack (1.21.11, 1.20.1) – Texture Pack
New Style Squid Resource Pack refreshes the appearance of regular squids by adjusting their textures to better match the look of the glow squid. By slightly redesigning the color and shading, it creates a more cohesive underwater aesthetic where both squid types feel visually connected. This change is purely cosmetic and does not affect mob […]
No More Axolotl Despawns Mod (1.21.11, 1.20.1) – Prevents Axolotls from Despawning
No More Axolotl Despawns Mod ensures that axolotls stick around indefinitely, making them reliable allies for underwater adventures or simply cute pets to keep in your base. Features: Prevents axolotls from despawning, ensuring they remain permanent companions. Breed axolotls with tropical fish and enjoy their company both underwater and on land. Axolotls play dead when […]