Forge Mods for Minecraft 1.20
Browse 136 free Forge mods for Minecraft 1.20 — popular picks include Just-In OCEAN, Mountain Sea and Continent three(山海大陆), Abyssal monster, the horror of the depths..
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Just-In OCEAN
A new material tough as netherite
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.
Abyssal monster, the horror of the depths.
Dive into the depths of the ocean and discover the Abyssal Monster, the horror of the depths! 🌊👾
IaFHippoPatch
Patches Ice and Fire hippocampus behavior to prevent constant surface floating. Adds depth preference AI making them stay 3-5 blocks underwater naturally while maintaining full swimming mobility and compatibility.
fapdos' Aquatic Additions
Adds many new fish creatures and underwater decorations to the game
In the depths
A mod that adds a gigantic creature to the deep oceans of Minecraft.
Wonderous Sea - Endless Ocean
Wonderous Sea adds new under represented marine life to the world of Minecraft!
Sirens Of The Deep
The mod adds sirens to the overworld oceans
deep oceans
deep oceans is a mod that adds very deep oceans
Sea Creeps
Sea Creeps have swam into Modrinth! The ocean just got explosive...
Do you like sharks? UwU
Shark furry mod
Mystic Seas
A mod that introduces mermaids, mermaid tails, and even some siren-related abilities!
[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!
Dangerous Waters
An ocean focused mod, filling Minecraft's oceans with new sea bases, as well as new sea creatures, biomes and much more.
Aquatic Origins
A origin mod addon, that adds aquatic like creatures to the game, mostly focused aorund sharks
Anterra Better Oceans
Better Oceans is a mod that greatly improves the oceans with structures, mobs, and storm events.
Magical Marines
A vanilla-styled 1.19.4+ mod that adds various fictional aquatic critters!
Aquatic Craft - Overworld Edition
An expansive, fleshed-out aquatic dimension squeezed into the Overworld.
ocean bean : cute friend from ocean
mod that add a little friend ocean bean
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!
Dweller Nautilus (Horror)
This mod adds a new monster to the ocean. Nautilus Dweller Cursed Drowned Cursed Nautilus Shell and signs

Pufferz
Want more aquatic animals & plants to fill your aquariums? Well then look no further!
Useful Sharks
I added sharks because mojang won't
UnderDasea
A mod that aims to add life to the oceans.
Piratecraft Modpack
A modpack that allows you sail the seas like a pirate and also come across large ocean mounments, sea creatures, and much more
bigfish: ripple
Expand vanilla fishing with new fish, attributes, collection records, bounties, QTE fishing, cooking, placeable food, exploration tools, and progression-focused aquatic gameplay.
Great White Shark
This mod adds simple great white shark
Marine biology
A mod that diversifies the oceans and adds several marine mammals from the cetacean family. Currently, the largest is the humpback whale. There is also a bowhead whale that you can ride. Smaller ones include the beluga whale, the pilot whale,
Leviathan
A new oceanic mob for Minecraft 1.20+
Sea eater: ocean horror
something unknown fell into the ocean
sirens of the deep
have fun exploring the deep sea invite your friend to explor the vast and deep oceans of Minecraft live your best life as a mermaid you wont be harmed by monsters because you are so beautiful customize your tail make it different colors
Aquaticworld
This mod adds 5 new creatures to diversify the oceans.The mod will also add 9 new structures and their prehistory.The mod is based on the game "Subnautica"
Jeff The Landshark
Bring home Jeff the Landshark as a fully interactive companion with unique abilities, progression, collectibles, armor, weapons, blocks, and much more custom features.
Sea Core Balance & Utilities
A balance and utility addon for Mine Mine no Mi and CartAddon, focused on cleaner PvP, reworked abilities, improved fruit terrain effects, bosses, crates, and server-friendly config tools.
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.