Bulb Zone

This article is about the Bulb Zone. You may be looking for the Bulb Zone Caves.

This seems new This article contains information that is updated for the latest Experimental Version of Subnautica. Players using stable mode may find this information inaccurate.

Bulb Zone
Tab	Biomes
Depth Range	140 - 480 meters
Temperature Range	13.8°C-14.1°C
Biome ID	koosh
Harvesting Nodes	Sandstone Outcrop Shale Outcrop
Coordinates	1251 -215 606
Point of Interest	Large Wrecks 940 -198 593 1309 -215 570 Destroyed Lifepods 1111 -265 557 Lava Geyser 965 -260 470 965 -250 625 1145 -275 555 Story Spoiler Bulb Zone Warp Gate 1383 -296 757

Detecting volcanic activity, and several unusual electromagnetic signatures in the region.

― PDA, Dialogue

The Bulb Zone is a unique type of biome bordering the Northeastern Mushroom Forest, the Crash Zone, the Mountains, and the Void.

Description

The Bulb Zone is characterized by small crevices and overhangs in a sandy dune-like area. It is also abundant with small brown algae and a large variety of plants with blueish purple hues, the most notable of which being the Bulb Bush.

The Bulb Zone is home to certain dangerous fauna. Notable predators, such as Bonesharks and Ampeels, can be found scattered throughout the Bulb Zone. Mesmers can also be found to a lesser degree.

Due to its proximity to the Crash Zone, the southern half of the Bulb Zone is subject to radiation. If the player has not repaired the Aurora's drive room, a Radiation Suit is needed to explore the southern region.

There is a cave system located below the Bulb Zone, known as the Bulb Zone Caves. These caves are accessible via any of the three entrances located within the biome. One of the caves links to the Mushroom Forest Caves.

Several Lava Geysers can be found in this biome. This, together with the Bulb Zone Caves, suggests a small amount of volcanic activity in the Bulb Zone.

Two large Wrecks are located within the Bulb Zone, containing several fragments.

Two of the thirteen Sea Crowns can be found here.

Spoiler alert: The following section contains story related material.
An Alien Warp Gate Cache is found in the Bulb Zone, linking to the Primary Containment Facility.

• Resources
• Fauna
• Flora
• Corals

• Ampeel Egg
• Boneshark Egg
• Bulb Bush Sample
• Common Coral Sample
• Diamond
• Gold
• Lithium
• Pygmy Fan Seed
• Redwort Seed
• Salt Deposit
• Sea Crown Seed
• Spotted Dockleaf Seed
• Table Coral Sample
• Writhing Weed Seed

Ampeel

Boneshark

Boomerang

Eyeye

Hoopfish

Mesmer

Rockgrub

Shoal of Fish

Shuttlebug

Bulb Bush

Pygmy Fan

Redwort

Sea Crown

Spotted Dockleaf

Violet Beau

Writhing Weed

Shell Plate

Purple Brain Coral

Slanted Shell Plate

Table Coral

Gallery

• Screenshots
• Concept Art

Overview

Another view

A Giant Bulb Bush

The Bulb Zone features a large variety of Flora and Coral

A rare type of seaweed, found only in the Bulb Zone

A large dune, the border with the Crash Zone

A small trench within the Bulb Zone

An immense bridge-like structure in the deeper part of the Bulb Zone

The area in which the Precursor Cache can be found

A Gold Deposit in the Bulb Zone

A large cluster of Bulb Bushes

The border between the Mountains and the Bulb Zone

The border bridge between the Mushroom Forest and the Bulb Zone

Concept Art

Bulb Zone at night Concept Art

For a more complete gallery, visit Bulb Zone/Gallery.

Trivia

• Despite concept art showing a Holefish in the Bulb Zone, no Holefish are found dwelling in this biome.
• The Bulb Zone was originally named the Koosh Zone, but it was renamed to prevent potential copyright infringements.