Oxygen Management
Master oxygen mechanics, calculate safe dive times, and avoid death.
📖 8 min read•Intermediate•Updated 2026-03-15
💡 Quick Tip: Always keep 20-30 seconds of oxygen as emergency reserve. Use the Oxygen Calculator before every dive.
🫁Oxygen Basics
Oxygen is your lifeline in Abyss. When it runs out, you die and lose all unsold fish. Managing oxygen is the most important skill.
| Tube | Oxygen Capacity | Cost | Depth Access |
|---|---|---|---|
| Starter Tube | 60s | Free | 0-50m |
| Pufferfish Tube | 90s | $2,850 | 0-150m |
| Anglerfish Tube | 120s | $8,000 | 0-250m |
| Abyssal Tube | 180s | $25,000 | 0-500m |
📋Dive Planning
- Check your tube's oxygen capacity
- Calculate descent time (deeper = more time)
- Reserve 30% oxygen for return trip
- Factor in fishing time at target depth
- Use the Oxygen Calculator for precise planning
⚠️ Dying loses ALL unsold fish. Always surface early rather than risk running out.