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Minecraft Java 1.21 Mods

Browse 28 free mods for Minecraft Java 1.21 — popular picks include Ocean Only, Dweller Nautilus (Horror), Ultimate Nausea.

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Ocean Only
1.21.11

Ocean Only

Only oceans will be generated in the overworld.

16kdownloads
Dweller Nautilus     (Horror)
1.20.1forge

Dweller Nautilus (Horror)

This mod adds a new monster to the ocean. Nautilus Dweller Cursed Drowned Cursed Nautilus Shell and signs

3.6kdownloads
Ultimate Nausea
1.21.11

Ultimate Nausea

This shader makes far-away objects appear to spin.

3.4kdownloads
Neutral Sea Grass and Kelp
1.14

Neutral Sea Grass and Kelp

Swaps out the neon colors seagrass and kelp use, with a more neutral color.

3.3kdownloads
Waterbeds
1.21.1fabric

Waterbeds

Introduces a bed that lets you sleep underwater

3.2kdownloads
Hold Your Breath
1.21fabric

Hold Your Breath

When you go underwater in-game, you need to hold your breath in real life.

2.2kdownloads
Karma Shader Nightmare
1.18.2

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.

2.2kdownloads
No Sprint-Swimming
1.21.2

No Sprint-Swimming

Disables fast movement in the water in survival and on servers, making oceans daunting again

682downloads
Aquatic Beds
1.20

Aquatic Beds

Beds in an aquatic style!

583downloads
BLHALYTRA
1.21.4

BLHALYTRA

Soft, toy, shark-shaped Elytra

508downloads
Zeeraket
1.21.5fabric

Zeeraket

Adds sea rocket (Cakile maritima), a glabrous, succulent annual, with a slender or stout taproot.

479downloads
Dynamite
1.21.4

Dynamite

Turns dead sea pickles into tiny dynamite charges

408downloads
Lava Oceans
1.11.2

Lava Oceans

simple datapack that makes all oceans lava

399downloads
sharky's random ideas
1.21.1neoforge

sharky's random ideas

my most random, wierdest and funny ideas

211downloads
Leviathan Ocean
1.21.11

Leviathan Ocean

Makes oceans absurdly deep. Inspired by a Wifies' video.

119downloads
Shadow's of The Deep chapter one
1.21.8neoforge

Shadow's of The Deep chapter one

The horrors that live in the dark and deep of caves and the ocean

99downloads
RaceSystem
1.21

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.

90downloads
Ocean/River/Lush Caves Grass Everywhere!
24w36a

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.

73downloads
Sharkiums And More
1.21.4neoforge

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)

70downloads
Under The Seas
1.21.4neoforge

Under The Seas

Discontiued For Certain Amount Of Time A new gameplay to minecraft by exploring the darkness of the sea

68downloads
Owl city music discs
1.21.5

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.

56downloads
Sharks Rubber Chicken addon
1.21.4neoforge

Sharks Rubber Chicken addon

A mod that is all about RUBBER CHICKENS. It adds 1 new item, 2 new tools, and 1 new mob

52downloads
Ocean/River/Lush Caves Foliage Everywhere!
24w36a

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.

46downloads
SeaAbilities
1.21.11

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.

37downloads
Better Conduit Recipe
1.21.7

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.

10downloads
One Piece Origins Mod (1.21.1, 1.20.1) – Powerful Abilities of Devil Fruit
1.21.1fabric

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
1.21.1

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)
1.21.8

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. […]