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What Are the Tadpole Pens?
The Tadpole Pens are a series of sealed bioluminescent enclosures found at 80–150m depth in the Bioluminescent Reef biome. They contain schools of Tadpole creatures and locked compartments with valuable upgrades.
How to Access Them
You need the Sonic Resonator tool to open Tadpole Pen doors. Each pen door has a resonance frequency — you tune the Sonic Resonator and fire.
Finding Keycodes
Keycodes are not random — they're hidden in the environment:
| Pen | Code Location |
|---|---|
| Pen A | Engraved on a rock formation 20m south of the pen entrance |
| Pen B | Inside a partially-open supply crate near the Sparse Reef |
| Pen C | Found on a data tablet inside Pen A (bring the Sonic Resonator) |
| Pen D | Reward for completing the Necrolei bio-analysis quest |