Minecraft Java 1.21 Mods
Browse 28 free mods for Minecraft Java 1.21 — popular picks include Ocean Only, Dweller Nautilus (Horror), Ultimate Nausea.
Updated daily
Ocean Only
Only oceans will be generated in the overworld.
Dweller Nautilus (Horror)
This mod adds a new monster to the ocean. Nautilus Dweller Cursed Drowned Cursed Nautilus Shell and signs
Ultimate Nausea
This shader makes far-away objects appear to spin.
Neutral Sea Grass and Kelp
Swaps out the neon colors seagrass and kelp use, with a more neutral color.
Waterbeds
Introduces a bed that lets you sleep underwater
Hold Your Breath
When you go underwater in-game, you need to hold your breath in real life.
Karma Shader Nightmare
A cinematic horror Minecraft shader pack that turns the dark into a living threat. Features dynamic fear mechanics, hallucination warping, drifting fog banks, a blood moon, desaturated colors, and its terrifying inverted sea ceiling.
No Sprint-Swimming
Disables fast movement in the water in survival and on servers, making oceans daunting again
Aquatic Beds
Beds in an aquatic style!
BLHALYTRA
Soft, toy, shark-shaped Elytra
Zeeraket
Adds sea rocket (Cakile maritima), a glabrous, succulent annual, with a slender or stout taproot.
Dynamite
Turns dead sea pickles into tiny dynamite charges
Lava Oceans
simple datapack that makes all oceans lava
sharky's random ideas
my most random, wierdest and funny ideas
Leviathan Ocean
Makes oceans absurdly deep. Inspired by a Wifies' video.
Shadow's of The Deep chapter one
The horrors that live in the dark and deep of caves and the ocean
RaceSystem
RaceSystem includes 7 races: Human, Shark, Bird, Rabbit, Undead, Demon, and Giant. Each race gives unique abilities like flight, underwater buffs, speed boosts, combat bonuses, or increased health and damage, while Human has no special abilities.
Ocean/River/Lush Caves Grass Everywhere!
Changes the Grass colormap so it always matches the Ocean/River/Lush Caves biome color – Part of the "Oh My Colormap!" collection.

Sharkiums And More
It adds Sharkium ore and much more to the game! But this world isn't as innocent as it seems.(Only Turkish Language)
Under The Seas
Discontiued For Certain Amount Of Time A new gameplay to minecraft by exploring the darkness of the sea
Owl city music discs
This is a texture pack that turns the normal music discs into songs from the albums "Ocean Eyes" and "Maybe I'm Dreaming" by Owl City.
Sharks Rubber Chicken addon
A mod that is all about RUBBER CHICKENS. It adds 1 new item, 2 new tools, and 1 new mob
Ocean/River/Lush Caves Foliage Everywhere!
Changes the Foliage colormap so it always matches the Ocean/River/Lush Caves biome color – Part of the "Oh My Colormap!" collection.
SeaAbilities
SeaAbilities Is a plugin for the ones that want sea creatures and sea abilities on their server. Its really fun and its custom coded.
Better Conduit Recipe
Adds a new recipe for the conduit, now requiring prismarine. The recipe will now require you to explore the ocean more, instead of just luck.
One Piece Origins Mod (1.21.1, 1.20.1) – Powerful Abilities of Devil Fruit
The One Piece Origins Mod brings the world of One Piece to Minecraft, letting you live out your pirate dreams. Start as a pirate, choose the Devil Fruit origin to gain powerful abilities, like flying or summoning fire, and explore a world filled with new items like sea prism stones and Haki stones. Encounter Marines, […]
Fishing Expansion Mod (26.2, 1.21.1) – Catches Special Fish And Loot
Fishing Expansion Mod completely changes how you catch things in the water. It lets you find special items, maps, and strong armor just by using your rod. You can even pull real monsters out of the sea and fight a scary new boss. Features: Water Trail: Arrows leave a path of water behind them. Ender […]
Devil May Cry Weapons Reborn Mod (1.21.8, 1.20.1)
Devil May Cry Weapons Reborn Mod brings some very fearsome weapons from the Devil May Cry game series into Minecraft. The weapons range from handheld swords with teeth to guns with firepower. All of these weapons can be found in loot chests found in mines, strongholds, desert pyramids, jungle temples, underwater ruins and village blacksmiths. […]