CurseForge · Minecraft mod
Sea Legend
Sea Legend adds a massive multi-phase ocean boss, the custom Leviathan Abyss biome, pirate ships, shipwrecks, lighthouses, exploration maps, unique loot, Abyssal armour and the powerful Fang Blade.
Quick answer
Which Sea Legend release should I use?
Sea Legend sealegend-1.1.0.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Sea Legend required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Sea Legend sealegend-1.1.0.jar need?
sealegend-1.1.0.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Sea Legend without breaking your instance.
Built for Sea Legend sealegend-1.1.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use sealegend-1.1.0.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside sealegend-1.1.0.jar. It opens that exact file at the source.
About this project
What does Sea Legend add?
Sea Legend: The Leviathan
Sea Legend: The Leviathan is a Forge 1.20.1 ocean adventure mod built around a huge custom boss, new exploration content and powerful Leviathan-themed gear.
Explore the Leviathan Abyss, a massive deep-ocean biome where pirate ships, shipwrecks and the Leviathan itself can be found.
Along the coast, you may also discover lighthouses containing supplies, a boat and a special map that can help guide you toward the Leviathan Abyss.
The Leviathan
The Leviathan is a large three-phase underwater boss with custom GeckoLib animations, swimming AI and several attacks including:
Bite Tail Swipe Body Ram Abyssal Roar Vortex Abyssal Beam
It becomes faster and more aggressive as the fight progresses.
Rewards
Defeating the Leviathan can reward:
Leviathan Heart Abyssal Scales Leviathan Fangs
These materials can be used to craft Abyssal Leviathan Armour and the Abyssal Fang Blade.
The armour gives stronger ocean-related effects as more pieces are equipped, while the Fang Blade has abilities such as an Abyssal Wave, underwater dash and bonus combat effects.
Exploration
You can find:
Leviathan Lighthouses Abyssal Pirate Ships Abyssal Shipwrecks Leviathan Abyss biome
All custom structures can also be found using Minecraft's /locate structure command.
Requirements Minecraft 1.20.1 Forge 47.x GeckoLib 4.x TerraBlender 3.x
Enter the Abyss, find the Leviathan, and see if you can survive.
Project description from CurseForge.
Pick your setup
Sea Legend by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Sea Legend versions and loaders
sealegend-1.1.0.jar
3 Oct 2026
Sea Legend
Sea Legend-1.0.0.jar
8 Aug 2026
Looking for an older file? The official CurseForge project page is in Resources.