Minecraft Java 1.21 Mods
Browse 65 free mods for Minecraft Java 1.21 — popular picks include Ocean's Delight, Loading Backgrounds - Oceans, [HUGE UPDATE] Fisherman's Haven.
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Ocean's Delight
Ocean's Delight is an addon mod for Farmer's Delight based around adding culinary content to the ocean!
Loading Backgrounds - Oceans
If you like oceans, this complementary resource pack to the Loading Backgrounds mod is ideal for you, since it changes the loading background of the games and replaces it with beautiful ocean images.
[HUGE UPDATE] Fisherman's Haven
A huge expansion for fishing and ocean exploration in Minecraft!
Tidal
Adds ambient tidal waves to beaches and oceans!
fapdos' Aquatic Additions
Adds many new fish creatures and underwater decorations to the game
Ocean's Delight (Polymer Port)
Polymer Port of Ocean's Delight
Water Caustics
Makes oceans more immersive by giving blocks animated textures to mimic water caustics from vibrant visuals, only underwater, and without the use of shaders.

Deep Waters
mermaids dimension
Snowy Leaves
Leaves have a white, snowy color in snowy biomes above sea level.
Impenduits
Adds weak forcefields powered by Hearts of the Sea
Panorama ocean and village
Panorama ocean and village by Beluimem
Atlantis: Fire Beneath Water
Classic underwater survival challenge map, now upgraded to Datapack | 经典水下生存地图数据包重制版《亚特兰蒂斯:水寒火暖》
TigerShark
磁场转动是漫画《海虎》和《武神》系列中的一种超能力,属于宇宙本源之力,是宇宙中必不可少的力量 Magnetic field rotation is a superpower in the manga series "Sea Tiger" and "God of War", belonging to the primordial force of the universe and an indispensable force in the universe.
Chromakey Blocks
A resource pack for adding chromakey blocks in Minecraft! This makes it easy to take out the background from screenshots or videos like a greenscreen. This changes glowstone to green, sea lanterns to blue, and shroomlights to red.
Deep Ocean Panorama
A custom main-menu panorama depicting the deep ocean
craftable Sponge
Allows players to craft sponges instead of only finding them in ocean monuments.
Aquatic Torches for Fabric 1.21.1
Waterloggable glow squid torches for Tricky Trials.
Sea Blue Sky Overlay
A fabricskybox sky overlay of a beautiful blue sky over an ocean.
Hana's Plushies
Adds craftable and rare loot plush shark items. 16 for each of the colors and several pride ones.
MxSxC1 No Particles
This removes the following particles: Buff Effects Rain Splashes Underwater Bubbles
Waterbeds
Introduces a bed that lets you sleep underwater
Os' Creepto Currency
This pack changes non-waterlogged (dead) sea pickles to stacks of Creepto coins of your choice of color(s). Versions: One of 8 colors, all colors, gems only, or metals only.
Create: Blahaj Factory
Create: Blahaj Factory adds more compat between Just Blahaj & Create to automate your shark friends! (Also Compatible with Only Blahaj)
Sea of Treasure
A roleplaying datapack that adds treasure items from Sea of Thieves
Ash Sailships
Majestic sailships await across your ocean adventure!
Glow Torches
Adds Glow Torches, aquatic torches crafted with a glow ink sac that can be placed under water
Ash Ships
Generates ships sailing across your Minecraft oceans!
Aquatic Plugin
This is a Minecraft Plugin wich adds many Ocean and Fish releated things to Minecraft
Puris Eco Ocean
This is a passion project from zi_jian. It adds 10 brand-new ocean biomes, 29 new entities, along with corresponding items, materials and decorative blocks. I'm still a beginner mod developer, so feel free to report any bugs you encounter.
Water Depth Fog
Underwater fog gets darker and closer the deeper you dive — a purely visual atmosphere mod for deep-ocean gameplay. Client-side.
Aquatic Beds
Beds in an aquatic style!
AquaWindow
AquaWindow — Replaces the wooden floor of all 9 vanilla boats with crystal-clear glass. Perfect for underwater safari and ocean exploration!
Zeeraket
Adds sea rocket (Cakile maritima), a glabrous, succulent annual, with a slender or stout taproot.
Better Structures Maps
Client-side mod that renders precise block distance to map decorations including woodland mansions, ocean monuments, villages, trial chambers, swamp hut, treasures...
Precariously Pirouetting Pickles
Adds rotations to sea pickles!
Motley Fins
Updates aquatic biomes, adding blocks and a new mob!