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Guide to Planet Zezura in Subnautica 2: the desert colony world the ship CICADA was bound for but never reached. Covers its role as the abandoned destination, the colonization program, and how it differs from Proteus, the ocean moon where the game is actually played.

The World Tree is a biome on the ocean moon Proteus in Subnautica 2, identified from development file names. The name implies a massive organic structure forming the basis of an entire underwater ecosystem.
Version history and patch notes for Subnautica 2 Early Access: the May 14, 2026 launch build, the day-one hotfix, Hotfix 1, and Hotfix 2, with confirmed changes only.

VepZone is a biome on the ocean moon Proteus in Subnautica 2, identified from development file names. Its purpose, appearance, and contents are entirely unknown.
The Hammerhead is an alien creature inhabiting the oceans of the ocean moon Proteus in Subnautica 2. It has a broad, laterally extended head and is highly territorial and aggressive toward larger lifeforms.
The Great Jaw (nicknamed Clamthulu): the stationary giant-clam Leviathan from Subnautica 2's trailer, its trap mechanic, how to scan it safely, and where to find it.

The Jelly Plateaus is a biome on the ocean moon Proteus in Subnautica 2 featuring flat elevated terrain with jellyfish-themed elements. Identified from development file names.

The Start Zone is the initial biome where players begin Subnautica 2 after the opening sequence. Unlike the original game's Safe Shallows, players arrive here after being propelled up from the deep ocean.

The Houndgar is a small squid-like creature in Subnautica 2 that hunts in squads alongside the Marrowbreach, dazzling prey with bright flashes. Sampling one contributes to the Chum Cloud biomod.
A getting-started guide to Subnautica 2: early resources, food, water and oxygen, first BioMods and Adaptations, base building, unlocking the Tadpole, and common mistakes to avoid.

The Marrowbreach is a large, aggressive shark-like predator of the Coral Gardens region in Subnautica 2, named in the June 1, 2026 Hotfix 3 patch notes and known for hunting alongside the Houndgar.

The Nibbler Mango is a mid-sized, aggressive pack hunter found in the Coral Gardens of Subnautica 2. Scanning one unlocks the Slow Metabolism biomod, and Hotfix 3 rebalanced the species in five ways.