Wiki / Biomes / Coral Reef

Coral Reef

A vivid mid-shallow biome — the first real ecosystem, rich in resources and patrolled by mid-tier predators.

Biome Data

Depth range
40–150 m
Danger
Moderate
Key resources
Copper Ore, Silver Ore, Coral samples, Crafting flora
Notable fauna
Marrowbreach, Needler Mango, Reef Grazer (herbivore fauna)

The Coral Reef is the first biome that feels like a living world rather than a tutorial. Colour-dense and resource-rich, it is also where Subnautica 2 introduces real danger in the form of the Marrowbreach and alpha-variant fauna.

Resources

The Reef is the natural source of the mid-tier minerals (copper, silver) and biological materials needed to progress past starter gear and into the first chassis upgrades for the Tadpole.

Threats

  • Marrowbreach — the apex predator of this zone; treat its territory as the edge of safe early exploration.
  • Needler Mango — an alpha variant that can turn a routine farming run hostile.

Strategy

Map the Reef before exploiting it. Knowing where the Marrowbreach patrols lets you plan gathering routes around it rather than into it.

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