Neoforge Mods for Minecraft 1.21
Browse 19 free Neoforge mods for Minecraft 1.21 — popular picks include Ocean's Delight, [HUGE UPDATE] Fisherman's Haven, Myths of The Sea.
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Ocean's Delight
Ocean's Delight is an addon mod for Farmer's Delight based around adding culinary content to the ocean!
[HUGE UPDATE] Fisherman's Haven
A huge expansion for fishing and ocean exploration in Minecraft!
Myths of The Sea
Discover new mythological aquatic creatures, such as the Leviathan, the Kraken, the Hippocampus, and many more!

Fish Fix
Amends hardcoded sea level assumptions to fix aquatic mob spawning.
Create: Warnautics
Create Big Cannons add-on with redstone-launched aerial bombs, multi-bomb cassettes, sea bombs, land mines, cinematic blast effects, and optional Sable ship destruction.
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!
More Aeronautics Void Seas
Makes the Create Aeronautics End Sea spawn in the other two dimensions.
Create: Blahaj Factory
Create: Blahaj Factory adds more compat between Just Blahaj & Create to automate your shark friends! (Also Compatible with Only Blahaj)
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.
No Air Mining Penalty
removes the default mining speed penalty when the player is underwater or not standing on solid ground
Water Depth Fog
Underwater fog gets darker and closer the deeper you dive — a purely visual atmosphere mod for deep-ocean gameplay. Client-side.
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
Nauseous Lite
Enchanced and customized nausea effects
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
CarrotSkin
In-game HUD with fancy carrots, custom exhaustion bar and relocated underwater bubbles to display above hp.
Tide Mod (1.21.5, 1.20.1) – 60+ New Fish Species
Tide Mod brings over 60 new fish and fishing mechanics. Fish are now found in specific areas, such as freshwater rivers, oceans, and even underground. You can catch, cook, craft, or sell these fish to villagers. For faster catches, you can craft special bait and even customize your fishing rods using the Angler's Workshop. There's […]
OneWayExchanges
Give an item to a player by right clicking. Nice if on a skyblock or underwater/lava if you can't drop that item.