Below Zero Egg Hatch Time Comparison (Containment Minutes)
How long does each Below Zero egg take to hatch? Compare 12 Alien Containment timers from Pengwing (20 min) to Squidshark (40 min). Wiki verified table here.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Arctic Ray Egg Fastest here at 20 minutes. | 20 minutes | Sparse Arctic, 1 day | Unknown Worlds via Subnautica Wiki BZ Eggs: Arctic Ray 1 day |
| Brinewing Egg 20 minutes. Flying hunter. | 20 minutes | Sparse Arctic, 1 day | Unknown Worlds via Subnautica Wiki BZ Eggs: Brinewing 1 day |
| Crashfish Egg 20 minutes. Explosive fish. | 20 minutes | Kelp Caves and Vents, 1 day | Unknown Worlds via Subnautica Wiki BZ Eggs: Crashfish 1 day |
| Eye Jelly Egg 20 minutes. Jellyfish floater. | 20 minutes | Glacial Connection, 1 day | Unknown Worlds via Subnautica Wiki BZ Eggs: Eye Jelly 1 day |
| Lily Paddler Egg 20 minutes. Surface paddler. | 20 minutes | Lily Pads Crevice, 1 day | Unknown Worlds via Subnautica Wiki BZ Eggs: Lily Paddler 1 day |
| Pengwing Egg 20 minutes. Flightless hunter. | 20 minutes | Arctic forests, 1 day | Unknown Worlds via Subnautica Wiki BZ Eggs: Pengwing 1 day |
| Sea Monkey Egg 20 minutes. Tool thief. | 20 minutes | Sea Monkey Nests, 1 day | Unknown Worlds via Subnautica Wiki BZ Eggs: Sea Monkey 1 day |
| Brute Shark Egg 30 minutes. Cave shark. | 30 minutes | Twisty Bridges Caves, 1.5 days | Unknown Worlds via Subnautica Wiki BZ Eggs: Brute Shark 1.5 days |
| Rock Puncher Egg 30 minutes. Drill predator. | 30 minutes | Crystal Caves mines, 1.5 days | Unknown Worlds via Subnautica Wiki BZ Eggs: Rock Puncher 1.5 days |
| Titan Holefish Egg 30 minutes. Giant drifter. | 30 minutes | East and West Arctic, 1.5 days | Unknown Worlds via Subnautica Wiki BZ Eggs: Titan Holefish 1.5 days |
| Cryptosuchus Egg Slowest here at 40 minutes. | 40 minutes | Thermal Spires Caves, 2 days | Unknown Worlds via Subnautica Wiki BZ Eggs: Cryptosuchus 2 days |
| Squidshark Egg 40 minutes. Rarest nest here. | 40 minutes | Deep Lily Pads Cave, 2 days, only 2 on map | Unknown Worlds via Subnautica Wiki BZ Eggs: Squidshark 2 days |
About this converter
Subnautica Below Zero hatches creature eggs in Alien Containment on fixed timers, and this page compares 12 of them in real minutes. Seven eggs hatch in 20 minutes, three take 30, and two take 40. Times come from Unknown Worlds game data as transcribed on the Subnautica Wiki Below Zero Eggs table, converted at 20 real minutes per in-game day. The original Subnautica has no per-egg timers since every egg there shares one rule, so only Below Zero rows feed this file.
How to use it
Pick two eggs and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. Try 1 Squidshark egg against an Arctic Ray egg to see the 40 to 20 gap. Then test a Brute Shark egg against a Pengwing egg to compare 30 minutes with 20.
The original game hatches every containment egg in 1 to 3 in-game days with no per species split, which is why SN1 rows stay out. Below Zero incubation days convert cleanly: 1 day reads 20 minutes, 1.5 days read 30, and 2 days read 40. Cuddlefish eggs in SN1 hatch in about 20 real minutes as a special case outside containment rules. Reefback eggs exist only through console commands and stay out. Hatching works in Alien Containment only.
FAQ
Which egg takes longest to hatch?
Cryptosuchus and Squidshark eggs at 40 real minutes, 2 in-game days.
Which eggs hatch fastest?
Seven eggs at 20 real minutes, 1 in-game day each.
Does this cover the first Subnautica?
No. The first game uses one shared 1 to 3 day rule for every egg, so per-egg rows cannot exist for it.
How long is a Below Zero day?
One full day night cycle runs about 20 real minutes, 15 day plus 5 night.
Sources
- Unknown Worlds Subnautica Below Zero game data (egg incubation days)
- Subnautica Wiki Below Zero Eggs table (per-egg incubation periods)
- Subnautica Wiki Eggs page (original game uniform 1-3 day rule cross-check)
Last verified: 2026-10-06 · 12 entries
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