After obtaining new weapons and armor, your warlords will be able to start training Nautiluses. Conduct this Study to add Nautiluses to your army.
| Level | Lumber | Iron | Stone | Silver | Gold | Time | Requirements | Unlock Nautiluses | Power | Hero's Experience |
| 1 | 100M | 80M | 100M | 150M | 7.9M | 411w 3d 00h 00m 00s> 7 Year(s) | ✓ | 3.5M | 4.8M |
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