![](https://image.tmdb.org/t/p/w342/bs0Q5TMYVUTNXCPbuPBNylzqrxk.jpg)
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On a class field trip, Ataru journeys to an underwater kingdom; and Ataru, Lum, Shinobu and Mendou get lost in a cave (exposing Mendou's legendary fear of the dark).
Første luftdato : Oct 14, 1981
Sidste luftdato : Mar 19, 1986
Episode : 218 Episode
Sæson : 1 Sæson
Kørselstid: 26 minutter
Studio: Fuji TV
Land: Japan