The Underwater Laboratory and Decayed laboratory are a pair of structures in the travel location Signal Source. It creates items.
Construction[]
| Structure Stage | Materials | Reward |
|---|---|---|
| Underwater Laboratory | ||
| File:.png Stage 1 |
1 in Signal Source | |
 Stage 2 |
10 Underwater Tool, 150 Corals | 50 
|
| Decayed laboratory | ||
 Stage 1 |
upgrade Signal Source to stage 2 with the Atlantis' Artifact | |
Function[]
| Item | Ingredient 1 | Ingredient 2 | Time | Sale Price |
|---|---|---|---|---|
| Underwater Laboratory | ||||
 Underwater Tool |
 3 Obsidian Bar |
 15 Quartz Sand |
none 
|
? 
|
| Decayed laboratory | ||||
 Turpentine |
 1 Amber |
40 Quartz Sand |
none
|
?
|
 Fishing Net |
 4 Quenched Obsidian |
 100 Algae |
none
|
?
|
 Bait Left: 10 |
 1 Bait Fish |
 50 Corals |
none
|
?
|
 Bait Left: 2 |
1 Bait Fish |
50 Corals |
none
|
?
|