SUBNAUTICA / TIPS

Never Trust Infinite Open Water

The outside edge of the crater leads to the ecological dead zone.

QUICK REFERENCEFirst SubnauticaReviewed 2026-10-28Reference / noindex
Original Volpedia schematic category illustration
OVERVIEW

Understanding Never Trust Infinite Open Water

The outside edge of the crater leads to the ecological dead zone.

This is an original reference for the first Subnautica. Your current depth rating, oxygen, available tools and navigation route determine when an objective is practical. Follow actual in-game PDA and Fabricator information for any values that vary by version.

PRACTICAL APPROACH

How to use this information

Turn back when the ocean floor vanishes and the PDA warns about conditions.

COMMON MISTAKES

What to avoid

Swimming farther out does not reveal a secret final biome.

CONTINUE ON VOLPEDIA

Related topics and walkthroughs

GUIDESComplete Beginner Walkthrough

From Lifepod 5 to your first dependable underwater base

GUIDESFirst Oxygen And Water Guide

Maintain oxygen and water during the first days

GUIDESWater Filtration And Food Farming

Make food and water sustainable during long projects

CREATURESBladderfish

A small purple fish that can be converted into filtered water early on.

EXPLORATIONDepth Rating

Vehicles are rated for certain water depths and can be upgraded with appropriate modules.

BASESExterior Growbed

An outdoor planter for cultivating suitable underwater or exterior plants.

PROGRESSIONFirst Day Survival

Stabilize food, clean water, oxygen and basic fabricator access near Lifepod 5.

Back to Tips

Independent Volpedia editorial encyclopedia about the first Subnautica, reviewed 2026-10-28. Unaffiliated with Unknown Worlds Entertainment. Category illustrations are original diagrams, not in-game maps, screenshots or exact creature portraits. No fabricated damage statistics, spawn probabilities or detailed map coordinates. References are documented privately and not shown as outbound research buttons.