Radiation

Radiation is a damaging effect in Subnautica that surrounds the Aurora. Once the player enters the Radiation zone, a warning will appear on the HUD and the noise of a Geiger counter can be heard. The player will gradually take damage from Radiation exposure, which will stop once the player exits the Radiation zone. As the player gets closer to the ship the screen will become fuzzy, green, and blurred. The player can craft a Radiation Suit, which when fully equipped with a helmet and gloves, negate all damage from radiation.

After the explosion of the Aurora, Radiation will leak from the drive core and spread to a set distance from the ship (in a radius of 940m around the x=1040 z=-160 coordinates), covering large parts of the game world including the eastern edge of the spawn zone in the Safe Shallows.

The Radiation zone will stay at this range until the player repairs the drive core breaches in the drive room with the Repair Tool. After repairing the leaks, the Radiation zone will disappear completely after three days and ten hours, allowing exploration of the Aurora and the Crash Zone without the Radiation Suit.

Biomes Affected
Biomes most affected by Radiation are: Biomes with partial exposure on their easternmost edges are:
 * Crash Zone (Only southwestern edge is free from radiation.)
 * Bulb Zone, southern half
 * Eastern Mushroom Forest
 * Eastern Safe Shallows
 * Northeast Grassy Plateaus
 * Southeast Kelp Forest
 * Northeast Kelp Forest
 * Central Safe Shallows
 * Southeast Grassy Plateaus
 * Jellyshroom Cave

Gallery
Radiation