Mobs Mods for Minecraft Java
Browse 48 free Mobs mods for Minecraft Java — popular picks include More Useful Copper, Underwater Village, Oceanic.
Updated daily
More Useful Copper
New uses for copper, such as statues, aquatic redstone, and many other tools!
Underwater Village
Discover a lot of new oceanic structures!
Oceanic
Overhauls Minecrafts Oceans and Fishing!
Myths of The Sea
Discover new mythological aquatic creatures, such as the Leviathan, the Kraken, the Hippocampus, and many more!
Mountain Sea and Continent three(山海大陆)
It includes level enhancement, independent attribute system and damage mechanism, magic modification against enemies and creatures, complete upgrade and development system, and constantly improving building structure for players to explore.
Aures - Sea Dwellers
Underwater villages and sea traders with random generation. Vanilla style.
Bedrock Ranged Mobs
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

Fish Fix
Amends hardcoded sea level assumptions to fix aquatic mob spawning.
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
Mako Mermaids Mod
Live your H2O dream! Play as Cleo, Emma, Rikki or Mako characters, use elemental powers, and create your own story!
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!
Cyra
A Minecraft mod that reveals the secrets of the ocean!
Nauticlysm
Adding new nautilus mobs with different variants for ocean biomes!
UnderDasea
A mod that aims to add life to the oceans.
bigfish: ripple
Expand vanilla fishing with new fish, attributes, collection records, bounties, QTE fishing, cooking, placeable food, exploration tools, and progression-focused aquatic gameplay.
Pets Load Chunks
Loads the chunks tamed pets are in, enabling use of them as chunk loaders while they're sitting around and fixing teleportation across oceans.
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
Fish Rework - Fishing
A plugin that reworks the fishing mechanic, by fishing up unique sea creatures instead of normal fish. Custom drops, items, armor, weapons, skill progression, recipes, custom GUI, advancements, artifacts and more.
Depths Reborn
This mod adds the Nautilus. Work will also be done to add some aquatic mobs and mob votes, such as the crab and The Monster Of The Ocean Depths, as well as others.
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
Water Enhanced
Expands ocean gameplay with new resources, gear, and aquatic mechanics while staying true to vanilla.

Blue Oceans
Blue Oceans is a technology-adventure mod designed to enhance the player's gaming experience by incorporating real-life items.It also includes some magical items.
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

Survival Sickness
Survival Sickness adds a deeper survival health system to Minecraft. Players can catch diseases from bad weather, mobs, unsafe food, desert heat, freezing, low sleep, wounds, and underwater strain.
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! 🌊🐠✨
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.
Aqua Verse
AquaVerse expands aquatic biodiversity of minecraft
JellyFishy
Introduces a brand new mob for the ocean (Jellyfish) just like in real life this mob groups up (10-20 in a group) and basically just moves freely also dont touch em!
Under The Seas
Discontiued For Certain Amount Of Time A new gameplay to minecraft by exploring the darkness of the sea
Stop Killing Turtles
This datapack makes it so there are SEVERE consequences for attacking sea turtles.
Enderberry teleport animals or villagers
Overview The Enderberry mod adds a unique item that allows players to bind and teleport animals, villagers, and aquatic creatures to desired locations, simplifying mob logistics.
DrownedOverhaul
Drowned mobs can now grab and drag players underwater. A dangerous new twist to ocean survival!
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 […]