Minecraft Java 1.21 Mods
Browse 167 free mods for Minecraft Java 1.21 — popular picks include Experiency Bosses, Eternal Ocean, Aquatica - 0.1 Actual Fishing.
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Experiency Bosses
Experiency Bosses is a datapack that brings forth four legendary foes, each bearing unique treasures—from the Axolotl lurking in the ocean’s depths to the Wither Skeleton King, crowned in shadow.
Eternal Ocean
An ocean world with creatable ships along with many new fishes and other creatures. Swimming and fishing are overhauled, along with plenty of new structures and biomes to explore.
Aquatica - 0.1 Actual Fishing
This datapack aims to add to the aquatic regions of Minecraft. The 0.1 version overhauls the fishing system.
FishMating
Bring your underwater world to life by letting fish breed naturally when players throw seeds into water! 🌊🐠✨
Aqua Verse
AquaVerse expands aquatic biodiversity of minecraft
DrownedOverhaul – A Deep Sea Threat Awaits
DrownedOverhaul transforms Minecraft’s oceans into a place of genuine peril. This plugin completely reimagines the behavior of Drowned mobs, turning them from passive nuisances into coordinated threats lurking beneath the waves.
DrownedConduitSpawnBlocker
Prevents Drowned from spawning near conduits for easier underwater building.
Hybrid Aquatic Mod Descriptions
This resource pack adds descriptions to every Single block/Mob/Item in Hybrid Aquatic
Shadow's of The Deep chapter one
The horrors that live in the dark and deep of caves and the ocean
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.
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
Tidemark Additions
Minecraft mod for Forge that adds a few aquatic features: two new mobs, new armor and tool sets, items, effects, and achievements
Bottomless Ocean mod
Adds a brand new dimention with 300 block deep oceans with new bizzare creatures to explore
Sharks Rubber Chicken addon
A mod that is all about RUBBER CHICKENS. It adds 1 new item, 2 new tools, and 1 new mob
Nautlius Tweaks
this datapack tweaks the Nautilus by making them more resistant to trident damage and removing the underwater mining speed penalty
MobSouls
Adds MobSouls that can be crafted with heart of the sea and the mobdrop witch give special abilities
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.
Bedrock Ranged Mobs (Datapack)
Makes Skeletons that are underwater and trident drowneds less than 3 blocks away from the player do melee instead of ranged attacks, like in bedrock edition
EvenIronGolemsRust
Even iron golems rust if they sink. A lightweight plugin that adds corrosion damage to underwater iron golems. （アイアンゴーレムだって、沈めば錆びる。水中の鉄ゴーレムに腐食ダメージを追加する軽量プラグイン。）
DrownedOverhaul
Drowned mobs can now grab and drag players underwater. A dangerous new twist to ocean survival!
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 […]
Item Glow Data Pack (26.2, 1.21.1) – Never Lose Track Of Dropped Items Again
Item Glow Data Pack makes all nearby dropped items glow subtly, helping you easily locate them even in dark caves, forests, or underwater. Whether you're mining, fighting mobs, or just accidentally dropped something valuable, this pack ensures you won't leave anything behind. A perfect quality-of-life addition for any survival playthrough! Enjoy playing this data pack! […]
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 […]
Axolotl Girl Resource Pack (1.21.1, 1.20.1) – Texture Pack
Axolotl Girl Resource Pack transforms dolphins into anthropomorphic “axolotl girl” characters, giving ocean life a playful and anime-inspired twist while keeping the mobs’ original behavior intact. Instead of the standard dolphin model, players will encounter stylized axolotl-themed characters swimming through oceans and assisting players just like regular dolphins. This change is purely cosmetic and doesn’t […]
Glowmethyst Squid Resource Pack (1.21.1, 1.20.1) – Texture Pack
Glowmethyst Squid Resource Pack is a creative Minecraft resource pack that reimagines the glow squid mob by combining elements of the glow squid and amethyst, giving it a unique, amethyst-inspired appearance and sound design. It replaces the default glow squid textures so that these underwater creatures sport crystalline features reminiscent of amethyst, creating a fresh […]
Froglins Mod (1.21.11, 1.19.2) – Hunters of the Night
Froglins Mod adds a new mob to the game – the Froglin, which lives in swamps. It is an aggressive mob that hides underwater and comes to the surface to hunt passive mobs. It can attack the player, but if its health gets low, it will try to run away. When a Froglin is killed, […]
Fish Bonanza Mod (1.21.1, 1.20.1) – New Aquatic Creatures
Fish Bonanza Mod adds a large number of new fish. The mod focuses on increasing variety in what can be caught while fishing, without changing core fishing mechanics. All fish are obtained through regular fishing and integrate naturally into the existing game flow. Features: Adds around 100 new fish types to the game. New fish […]
Breed Axolotl With Tropical Fish Item Data Pack (1.21.11, 1.20.1) – Convenient Breeding
Breed Axolotl With Tropical Fish Item Data Pack allows you to breed axolotls using the tropical fish item, in addition to the tropical fish bucket. This feature makes it easier and more convenient to breed axolotls, providing greater flexibility in managing your aquatic pets. Features: Allows breeding axolotls with the tropical fish item as well […]
Gamingbarn's Zombies Mod (1.21.11, 1.20.6) – Faster, Stronger, and Expandable Zombies
Gamingbarn's Zombies Mod redefines gameplay by replacing default monsters with highly powerful, fast, and adaptable zombies. These enhanced zombies have special abilities, including block-breaking, acid-spitting, and bridge-building. Water becomes a new danger zone as Water Zombies spawn day and night, moving with extreme speed in aquatic environments. Fire serves as the primary weakness for most […]
Vanilla Shutters Mod (1.21.11, 1.21.1) – 15 Shutter Variants
Vanilla Shutters Mod adds a versatile and decorative way to control light and privacy in your Minecraft builds. Whether you want to enhance your home’s aesthetics, manage light in underwater structures, or add a functional toggle to your mob farm, this mod has you covered. With 15 different variants, these shutters are waterloggable, support redstone […]
Upgrade Aquatic Mod (1.21.1, 1.20.1) – New Fish, Sea Monsters and More
Upgrade Aquatic Mod goes back to the parts of Minecraft that the 1.13 water update left thin and fills them in: oceans, rivers, and the insomnia system behind phantoms. Its headline addition is the Thrasher, a shark like predator that hunts with sonar, drags what it catches in its jaws, and drops material used in […]
Critters and Companions Mod (1.21.1, 1.20.1) – A New Set of Animals
Critters and Companions Mod is a mod focused on adding new animal species, including land creatures, aquatic animals, and flying creatures. Some of these animals can be tamed by players and will help with certain tasks. Features: Otter: Spawns in rivers. Otters will open clams to find pearls. Pearls are used to craft the pearl […]
Aquatic Frontiers Mod (1.21.1, 1.20.1) – An Ocean Teeming with Life
Aquatic Frontiers Mod adds several new creatures to make your Minecraft oceans feel more alive. This mod introduces five new mobs, including the Sponge Squid, Coral Golem, and Giant Squid, to populate the underwater world. Features: Adds five new aquatic mobs: the Sponge Squid, Sandy, Coral Golem, Giant Squid, and Coral Crab. Each new mob […]
Mythical Origins Mod (1.21.1, 1.20.1) – Based Around Popular Mythical Beasts
Mythical Origins Mod is an addon for the Origins mod, it adds 5 new origins, which are all based around classic mythical creatures. It has 5 origins included, which are "Werewolf", "Mermaid", "Dragon", "Elf", and "Fairy". Features: Werewolf Werewolf Activate – When night strikes, you are able to activate a series of powers that help […]