Minecraft Java 1.21 Mods
Browse 168 free mods for Minecraft Java 1.21 — popular picks include Aquatic Torches Returns, Complementary Nautilus, Fish Fix.
Updated daily
Aquatic Torches Returns
Torches made from glowing squids that can be used underwater, now for Neoforge!
Complementary Nautilus
Adds a nautilus mob to the oceans.
Fish Fix
Amends hardcoded sea level assumptions to fix aquatic mob spawning.
Gigantic Squid
This datapack adds a new 3D animated ocean boss, the gigantic squid! No resource pack required!
Deep Blue
Adds 10 majestic ocean creatures — whales, sharks, giant squid, and more — along with 15 new items including weapons, food, and crafting materials to bring the deep seas to life.
Kislevemon
This is a Cobblemon addon which comes with currently 19 fakemons, Shiny and non shiny! they can be found in the oceans, deserts and forests.
Blue Depths
This is a datapack that improves the Minecraft ocean and river ecosystem by adding new mobs, blocks, and a brand new ocean boss. The new sea creatures include Orcas, Sharks, Sturgeons, Jellyfish, Catfish, and Tuna
More Tide Fish
Added some dangerous deep ocean fish to Tide⚡️
Dweller Nautilus (Horror)
This mod adds a new monster to the ocean. Nautilus Dweller Cursed Drowned Cursed Nautilus Shell and signs
Aquatic Breeding
Adds a way for fish and squid to breed, manual and automatic! Fish eat Fish Flakes, Squid hunt for live prey! Breed Tropical Fish of all colors and patterns!
Sunken Skeletons
Adds the aquatic Sunken Skeleton from Minecraft Dungeons.
Cyra
A Minecraft mod that reveals the secrets of the ocean!
Kraken Mod
A mod that add a Kraken and a structure in the ocean. The geckolib library is needed.
Apex Waters
The Great White shark has arrived, you no longer are at the top of the food chain.
Hybrid Aquatic: Fantastic Fishery
An addon for Hybrid Aquatic that adds various imaginary fish
Useful Sharks
I added sharks because mojang won't
Aquatic Shulkers
Shulkers generate in deep oceans like clams
Beyond The Ocean
A Mod that let´s you explore beyond the oceans of minecraft. New ocean themed planets on a post End level difficulty. New structures, mobs, items and technologies. New adventures and a new story ready to be told.
Aquatic Fauna Addition
A mod adding content to the oceans
Shell Seekers
Adds 7 types of shellfish to ocean floors with pearls that summon Endermen when thrown.
Ocean Giants
“Enhances the size and power of aquatic creatures from Alex's Mobs and Ben's Sharks to create epic sea battles.”
Great White Shark
This mod adds simple great white shark
Aquatic Fauna Expansion
A NeoForge mod that revitalizes Minecraft's oceans with new creatures, behaviors, and underwater biodiversity.
Realistic Terrain Movement
Movement speed varies by terrain block, boats break in oceans, at mountain peaks high-altitude winds push players around. Designed to encourage the use of external transport mods, particularly Create Aeronautics.
Aquatic Plugin
This is a Minecraft Plugin wich adds many Ocean and Fish releated things to Minecraft
better mob : sea expansion
Better Mob: Sea Expansion transforms Minecraft oceans with unique creatures like Whales, Lobsters, Deep Watchers, Coral Golems, and Jellyfish, creating deeper exploration, dangerous encounters, and unforgettable underwater adventures.
Motley Fins
Updates aquatic biomes, adding blocks and a new mob!
Reaper Leviathan
A mod that adds Reaper Leviathan from “Subnautica” to the deep oceans of Minecraft.
Oceanic Slime
Retextures the slime to aquarium like mob
Monster Origins
(WIP) Minecraft 1.20.1 (and now 1.21.1) / Fabric addon for Origins that adds four origins Arachne (a humanoid spider), Medusa (a gorgon), Harpy (a storm-wind bird-woman), and Mermaid (a singer of the deep) each built around a different playstyle
Sharks | Shark mobs for ItemsAdder
this addon adds a dangerous shark to your world and more!
Water Enhanced
Expands ocean gameplay with new resources, gear, and aquatic mechanics while staying true to vanilla.
Oceanlife
This project adds new Fish variants such as a shark that can attack you.
Aquatic Creatures
Did you know we know most about the space than own ours oceans? I want to make you feel that with this mod
sharky's random ideas
my most random, wierdest and funny ideas
Calm Columns
Tired of bubble columns cluttering your view? This pack tones down their visual intensity, making them far less intrusive while preserving their function and style. Perfect for underwater bases, mob farms, or any build where bubble spam gets in the way.