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Episode
- Episode 1 : The Coded Message
- Episode 2 : Off to Iceland
- Episode 3 : A Silent Guide
- Episode 4 : The Sleeping Volcano
- Episode 5 : Romy in Danger
- Episode 6 : Towards the Centre of the Earth
- Episode 7 : Transfer's Revenge
- Episode 8 : An Unexpected River
- Episode 9 : Lost in Darkness
- Episode 10 : The Underground Sea
- Episode 11 : The Battle of the Monsters
- Episode 12 : The Storm
- Episode 13 : The Trip Back
- Episode 14 : A Maritime Mystery
- Episode 15 : Old Friends
- Episode 16 : Ned Land, the Harpooner
- Episode 17 : On the High Seas
- Episode 18 : The Monster of the Depths
- Episode 19 : The Mysterious Captain
- Episode 20 : Prisoners on the Nautilus
- Episode 21 : An Underwater Walk
- Episode 22 : On Terror Firma
- Episode 23 : The Pearl Divers
- Episode 24 : At the South Pole
- Episode 25 : Fighting with the Octopus
- Episode 26 : Escape Plans