Source: CBBC
10. Colossal Squid
18-07-2025
CBBC
All episodes
9. Fossil
17-07-2025
8. The Test
16-07-2025
7. Captured
15-07-2025
6. Lonesome Jim
14-07-2025
5. The Devil's Sea Mystery
11-07-2025
4. Digging Deeper
10-07-2025
3. A.i.m.y.
09-07-2025
2. The Dark Orca
08-07-2025
1. Here Be Dragons
07-07-2025
13. The Abyss Stares Back
20-04-2024
Series 2: 4. Treaturous Waters
27-10-2023
Series 2: 2. The Baltic Sea Anomaly
25-10-2023
12. The Phantom Sub
13-04-2024
16. Tunnel
11-05-2024
15. Treasure Of The Islanders
04-05-2024
Series 2: 8. Hidden Secrets
02-11-2023