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Hammerhead
The Hammerhead is an alien creature inhabiting the oceans of Planet Zezura in Subnautica 2. It was first seen in official preview screenshots distributed by Unknown Worlds Entertainment and is one of several new fauna species confirmed for the game. The creature's name comes from its most distinctive physical feature: a broad, hammer-shaped head structure that draws an obvious parallel to the real-world hammerhead shark, though the creature's body plan is distinctly alien in nature.
Appearance
The Hammerhead appeared in preview screenshots released alongside other official media for Subnautica 2. The screenshots show a creature with a wide, laterally extended head. Its overall body proportions and coloration differ significantly from anything on Earth, fitting the alien biology of Zezura's ecosystem. The full size of the Hammerhead relative to the player character has not been precisely described, though the preview screenshots suggest a mid-sized creature rather than a leviathan-class organism.
Zezura's creature ecosystem
The Hammerhead is part of a broader roster of new fauna designed for Planet Zezura. No creatures from Planet 4546B return in Subnautica 2; the entire ecosystem is new. Other confirmed creatures include:
Creature | Source | Notes |
|---|---|---|
Dev Vlog 3, trailer | Massive squid-like leviathan with four tentacles and AI-driven behavior. Found in the Sparse Plains. | |
Time Capsule ARG, screenshots | Revealed through a community ARG in July 2024. Features long eyes and translucent body sections. | |
Giant crustacean | October 2024 cinematic trailer | A large crab-like creature that rises from the seabed disguised as coral, knocking a diver into the depths. |
Blight-affected fauna | Official descriptions | Standard creatures corrupted by the Blight bacterium, showing altered appearance and more aggressive behavior. |
Leaked milestone documents from May 2025 (confirmed authentic by KRAFTON) listed a creature roster as part of the Early Access build, though individual species were not named in the leak. One leviathan-class creature was cut from the Early Access scope, but additional creatures will be added throughout the Early Access development period.
Gameplay interactions
Like all creatures in the Subnautica franchise, the Hammerhead is expected to be scannable with the Scanner tool, which would add an encyclopedia entry to the PDA. It may also be a valid target for the Biosampler, allowing players to extract genetic material for the DNA Adaptation System. Whether the Hammerhead is passive, territorial, or aggressive has not been disclosed.
Subnautica 2 features no weapons; Design Lead Anthony Gallegos confirmed the game has "no weapons, only collection tools." If the Hammerhead is hostile, players will need to evade or distract it rather than fight it, consistent with the franchise's core design philosophy.
What remains unknown
As of March 2026, the following details about the Hammerhead have not been officially disclosed:
Specific biome assignment (which of Zezura's biomes it inhabits)
Behavioral patterns (passive, defensive, or aggressive)
Whether it provides specific DNA adaptations when biosampled
Full size measurements and detailed anatomy
Whether it is affected by the Blight
This article will be updated as more information is revealed during Early Access.