Where is aerogel subnautica

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Last updated: April 8, 2026

Quick Answer: In Subnautica, aerogel is a crucial advanced material crafted from gel sacks and rubies, primarily used to build essential equipment like the Prawn Suit, Cyclops submarine, and thermal plant. It's found in the Blood Kelp Zone, Deep Grand Reef, and Lost River biomes, requiring players to collect gel sacks (found in caves and kelp forests) and rubies (from thermal vents and deep areas) to fabricate it at a fabricator.

Key Facts

Aerogel in Subnautica is crafted from 2 gel sacks and 1 ruby at a fabricator
It has a density of approximately 0.001 g/cm³, making it 99.8% air by volume
Real-world aerogel was first created in 1931 by Samuel Stephens Kistler
In-game, aerogel is used to build the Prawn Suit, Cyclops, and thermal plant
Gel sacks for crafting are commonly found in the Blood Kelp Zone and Deep Grand Reef biomes

Overview

Aerogel in Subnautica is a fictionalized version of the real-world material known for its extreme lightness and insulating properties. In the survival game developed by Unknown Worlds Entertainment, released in 2018, aerogel serves as a critical advanced crafting component for mid-to-late game equipment. Players must explore dangerous deep-sea biomes to gather its ingredients: gel sacks and rubies, making it a milestone in progression.

Historically, real aerogel was invented in 1931 by American chemist Samuel Stephens Kistler, who created it by replacing the liquid in a gel with gas. The material gained prominence in space exploration, with NASA using it for insulation on Mars rovers. Subnautica adapts this concept, emphasizing its rarity and utility in an alien underwater environment, where it enables survival against extreme pressures and temperatures.

How It Works

Aerogel functions as a high-tier material in Subnautica's crafting system, requiring specific resources and fabrication steps.

Key Point 1: Crafting Process: To create aerogel, players need 2 gel sacks and 1 ruby. Gel sacks are plant-like resources found in biomes like the Blood Kelp Zone and Deep Grand Reef, while rubies are mineral deposits located near thermal vents and deep areas such as the Lost River. These are combined at a fabricator, which takes approximately 3 seconds to produce 1 aerogel unit.
Key Point 2: Material Properties: In-game, aerogel is described as having ultra-low density and excellent thermal insulation, mirroring real-world aerogel's density of about 0.001 g/cm³ (99.8% air). It withstands extreme temperatures, crucial for deep-sea exploration where temperatures can drop below 2°C or rise near thermal vents to over 70°C.
Key Point 3: Gameplay Utility: Aerogel is essential for crafting advanced equipment, including the Prawn Suit (requires 2 aerogel), Cyclops submarine (requires 3 aerogel), and thermal plant (requires 1 aerogel). These items enable deeper exploration, resource gathering, and base building, with the Prawn Suit allowing operation at depths up to 1700 meters.
Key Point 4: Resource Locations: Gel sacks spawn in clusters in caves and kelp forests, with high concentrations in the Blood Kelp Zone (depth ~300-500m) and Deep Grand Reef (~500-600m). Rubies are found in the Inactive Lava Zone, Lost River, and near thermal vents, often requiring a Seamoth or Prawn Suit for safe collection due to hostile creatures like Crabsquids.

Key Comparisons

Feature	Aerogel (Subnautica)	Real-World Aerogel
Density	Extremely low, similar to real version	~0.001 g/cm³, 99.8% air
Primary Use	Crafting advanced vehicles and bases	Insulation in aerospace and science
Creation Method	Fabricated from gel sacks and rubies	Sol-gel process with supercritical drying
Thermal Insulation	High, for in-game thermal management	R-value up to 10 per inch, used by NASA
Accessibility	Requires mid-game exploration and tools	Commercially available but specialized

Why It Matters

Impact 1: Game Progression: Aerogel gates access to end-game content, as without it, players cannot build the Prawn Suit or Cyclops, limiting exploration to depths of about 900 meters. This encourages strategic resource management, with an average playthrough requiring 10-15 aerogel units for essential builds.
Impact 2: Survival Enhancement: By enabling thermal plants and insulated equipment, aerogel helps players survive in extreme biomes like the Lava Zones, where temperatures exceed 50°C. This reduces energy needs for bases, with thermal plants providing up to 250 power units using geothermal energy.
Impact 3: Educational Value: Subnautica introduces players to real scientific concepts; aerogel's properties reflect its use in NASA missions, such as the Mars rovers' insulation. This blends entertainment with learning about materials science in an engaging, immersive environment.

Looking forward, aerogel's role in Subnautica highlights how game design can integrate real-world science to enhance gameplay depth and realism. As materials like aerogel advance in reality—with applications in energy efficiency and space exploration—their fictional counterparts may evolve in sequels or mods, offering new crafting possibilities. For players, mastering aerogel fabrication is a key step toward conquering the depths of Planet 4546B, embodying the game's themes of innovation and adaptation in hostile environments.