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Marie and Nadia become sick from a dangerously fatal tropical fever. To save them from death, Nemo charts course for an underground reef, where he takes Jean, Sanson, and Hanson on a quest to find the cure. Coming back, however, they have to deal with a territorial, eel-like Dinicthys....
First Air Date : Apr 13, 1990
Last Air date : Apr 12, 1991
Episode : 39 Episode
Season : 1 Season
Runtime: 25 minutes
Country: Japan