






The oceans of Minecraft have always felt a little too safe.

Far below the surface, beyond the coral reefs and shipwrecks, something ancient roams the depths. The deep ocean is no longer empty—it is alive, glowing, and dangerous.
The Creatures of the Abyss
The Abyssal Leviathan: The ancient, massive ocean boss. It rarely appears in the world, making every encounter feel like a true discovery. Its massive, glowing body can sometimes be seen moving through the darkness beneath the waves. Those who challenge it and survive earn Varuna's Trident, an artifact granting Water Breathing and Water Walking.
The Anglerfish: A hostile predator lurking in the dark. It uses its bioluminescent glow to light up the deep sea, but don't get too close—the moment it spots you, it will attack.
The Bathyal: A small, passive octopus that drifts through the depths. While completely harmless to players, its body emits a soft, eerie glow that helps illuminate the dark waters.
The Deep Sea Moray: An elusive, giant eel slithering across the ocean floor. Unlike the other denizens of the deep, it has no bioluminescence and blends perfectly into the shadows. It is passive, but its sudden appearance out of the darkness is enough to startle any diver.
Requirements GeckoLib (Required for animations)
The ocean is vast. Most players will never find the Leviathan or survive the depths. Whether that's good luck or bad luck is up to you.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as fdse-1.0.1-neoforge-1.20.4.jar — drop this file into the mods folder
- Download size: 510 KB
- Download link checked 5 Sept 2026 — working
These come from our own check of the pack file, not from the source page.