Forge Mods for Minecraft 1.20
Browse 38 free Forge mods for Minecraft 1.20 — popular picks include Aquamirae [Neo/Forge Edition], Illager Warship, Realm RPG: Sea Dwellers.
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Aquamirae [Neo/Forge Edition]
Ship graveyard with terrible deep sea creatures!
Illager Warship
Adds a big illager warship to the oceans
Realm RPG: Sea Dwellers
Underwater villages and sea traders with random generation. Vanilla style.
Underwater Village - Oceanic Structures
Discover a lot of new oceanic structures!
Hybrid Aquatic
A mod that expands upon Minecraft's aquatic life
Unusual Fish
Adding fictional fish and other aquatic creatures!
Myths of The Sea - Mythology Mobs!
Discover new mythological aquatic creatures, such as the Leviathan, the Kraken, the Hippocampus, and many more!
Deep Blue: A Bettas & Aquatics Addon!
Adds large ocean creatures to the DragN’s Bettas & Aquatics mod!
Illager War Trireme
Adds an Illager War Trireme to warm ocean biomes
Oceanic Realms
make your ocean more vibrant
Aquatic Creepers
New creepers that can appear in the oceans! Discover the new items and increase the difficulty of the ocean.
L's Ocean Trader
adds a new villager, the Ocean Trader and his lighthouse
Old fisherman swamp house
adds an old fisherman’s house to swamp biomes, with villagers and aquatic mobs beneath it
Asian Illager Ship
Adds an Asian Illager Ship to Ocean Biomes
Treasures of the dead
This is a mod that adds new pirate enemies, structures and many other features, inspired by Sea of thieves.
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.
fapdos' Aquatic Additions
Adds many new fish creatures and underwater decorations to the game
Sirens Of The Deep
The mod adds sirens to the overworld oceans
[Alone on a Raft] Ocean Survival
A perfect ocean survival modpack for a "100 Days" challenge!Explore a world of vast islands, craft an ever-growing boat, and survive dangerous sea creatures.
Subnautica in MC
Dive into a fully immersive Subnautica-inspired world in Minecraft! Explore alien oceans, build futuristic underwater bases, and survive mysterious creatures in stunning, shader-enhanced waters!
Aquatic Origins
A origin mod addon, that adds aquatic like creatures to the game, mostly focused aorund sharks
Olven's Deep End
Adds NEW void-ocean content and progression to the depths of The End. New MOB: Eldermen, reputation+quest system, Special void vishing, fishing crates, rifts, teleporters, materials, legendary weapons, new stalking monster + More!
Useful Sharks
I added sharks because mojang won't
Sage's Ocean Adventure Pack
Build a functioning ship and explore the seven seas as a Pirate, or explore the depths of the ocean as a mermaid or another creature. Build an empire or a secret base. This pack centers around the ocean.
Spiral of Jujutsu
The Jujutsu sorcerers are stranded on a island where cursed waters hide sea monsters and nighttime mobs grow larger every day. With limited resources, they must survive, fight, and uncover the curse before the island overwhelms them.

StaffCraft: Evolution
StaffCraft: Evolution adds 10+ unique magical staffs with insane abilities. Freeze enemies, bend reality, summon meteors, control the ocean and more! Collect shards from mobs, craft powerful staffs, and battle friends in the arena with the /vs system. ⚔️
Monsters And Girls Secrets Of Mermaids Mod (1.20.1, 1.19.2) – Tamable Mermaids
Mermaids are half-human half-marine mythical life forms that can live on both land and water. They can be commonly seen in cartoons and fairy tales. Do you wish to see mermaids in your game? If the answer is yes, Monsters And Girls Secrets Of Mermaids Mod is for you. As the name suggests, this mod […]
Sea of Pillagers
An adventure across an ocean teaming with life, monsters and pirates.
Aino's Underwater Adventures (Mermaid & Siren)
An underwater-themed modpack focused on playing as a mermaid or siren, featuring ocean exploration, magic, creatures, and aquatic building.
Luvstar's Sirencraft
A mystical, dark, yet beautifully celestial Minecraft modpack focused on exploring the deep ocean as an underwater creature.
Annie Angel's Mermaidia
Mermaidia is a Minecraft modpack themed around mermaids and other mythical creatures. Explore the ocean depths as a mermaid and meet all kinds of aquatic creatures along the way!
Archosaur Survival
Archosaur Survival reimagines classic Minecraft by adding custom trees, animals, improved farming and cooking, and toggleable combat. Experience realistic ocean physics, dynamic weather with storms and tornadoes, custom furniture, and detailed blocks.
Aquatic Oddities
More aquatic life for your water
Mystic Corsairs
A pirate-themed modpack featuring mythical sea creatures, deadly adventures, customizable ships, and intense battles with other pirates.
Black Sea Bass AKA Tuna
Adds in dragons, dinosaurs, and anything my friend's kid requests.
Depths Reborn [Nautilus]
This mod adds the Nautilus to versions prior to its update, as well as other aquatic mobs.