Neoforge Mods for Minecraft 1.21
Browse 78 free Neoforge mods for Minecraft 1.21 — popular picks include Aquamirae [Neo/Forge Edition], Upgrade Aquatic, Illager Warship.
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Aquamirae [Neo/Forge Edition]
Ship graveyard with terrible deep sea creatures!
Upgrade Aquatic
Further upgrades the Update Aquatic with more aquatic additions!
Illager Warship
Adds a big illager warship to the oceans
Aquamirae
Ship graveyard with terrible deep sea creatures!
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!
FTB Ocean Mobs
A collection of mobs & monsters that lay beneath the ocean's floor
Ben's Sharks
A simplistic approach towards one of the ocean's most complex creatures.🦈
FTB Rift Helper
Helper mod to support rift behaviour with FTB Ocean Mobs and FTB Team Bases
Myths of The Sea - Mythology Mobs!
Discover new mythological aquatic creatures, such as the Leviathan, the Kraken, the Hippocampus, and many more!
Illager War Trireme
Adds an Illager War Trireme to warm ocean biomes
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
Elliemore's Deep waters
Mermaids dimension
Old fisherman swamp house
adds an old fisherman’s house to swamp biomes, with villagers and aquatic mobs beneath it
Animal Garden - Manatee
This mod adds the gentle giant the manatee(sea cow) into the game.
Animal Garden - Sea Otter
Adds tamable Sea Otter into the game, that will fight and protect you.
Animal Garden - Bull Shark
This mod adds the aggressive underwater creature, the bull shark into the game.
Aquatic Frontiers
The Ultimate Aquatic MOD
Animal Garden - Harp Seal
This mod adds the harp seal as tamable mob to the frozen ocean biome!
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.
Animal Garden - Narwhal
This mod adds the unicorns of the sea, the narwhals to the frozen ocean biomes.
Sea Life
Bring oceans and rivers to life with new fish, items, and underwater machinery.
Pelagic Prehistory
Deep below the surface of the ocean exists an undiscovered wealth of life. Adventure down to the darkest depths to mine fossils and a brand new stone-type. Finally, use your hard earned materials to create machines for the future, and unlock life that may
Myths of The Sea
Discover new mythological aquatic creatures, such as the Leviathan, the Kraken, the Hippocampus, and many more!
fapdos' Aquatic Additions
Adds many new fish creatures and underwater decorations to the game

BetterVannilaFishes
Dive into a more vibrant and diverse ocean. Re-imagined, re-animated, and re-alive.
In the depths
A mod that adds a gigantic creature to the deep oceans of Minecraft.
Wild Animals
This datapack adds elephants, jellyfishes, sharks and more, without causing lag to the server! No resource pack required
Do you like sharks? UwU
Shark furry mod

Deep Waters
mermaids dimension
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.