Source: CBBC
15. Treasure Of The Islanders
23-05-2018
CBBC
All episodes
14. The Junior Nektons
22-05-2018
13. The Abyss Stares Back
21-05-2018
12. The Phantom Sub
18-05-2018
11. Monster Hunter
17-05-2018
10. Colossal Squid
16-05-2018
9. Fossil
15-05-2018
8. The Test
14-05-2018
7. Captured
11-05-2018
6. Lonesome Jim
10-05-2018
Series 2: 8. Hidden Secrets
25-04-2018
Series 2: 9. The Maze
26-04-2018
2. The Dark Orca
04-05-2018
Series 2: 5. Kenji's Monster
20-04-2018
19. The Proteus Factor
29-03-2018
Series 2: 4. Treaturous Waters
19-04-2018
Series 2: 12. Thunder And Lightening
01-05-2018
3. A.i.m.y.
07-05-2018
Series 2: 3. Mermaids
18-04-2018
