Dai-Kaiju cover
Japanese Name 大海獣
English Name The Giant Sea Monster
Creature From the Depths (D&Q)
Publication date 1964 (rental)
May 15-July 3, 1966
Magazine Shonen Magazine
[v · t · e]
Shonen Magazine
The Great Yōkai War Daruma

Dai-Kaijū (大海獣), or The Giant Sea Monster, is a GeGeGe no Kitarō story that first appeared as a chapter of the Hakaba Kitarō rental manga under the title A Secret Story (ないしょの話, Naisho no Hanashi). The rental manga was first released in 1964. It has since been adapted for the 1968, 1985 and 1996 anime versions of "Gegege no Kitarō". In the 1996 anime, it was used as part of the plot for the 1st movie, while combining it with the plot of Yōkai Army. In addition, the 1968 adaptation was later re-edited into a film as well, the first in the Kitarō franchise.

In the Drawn & Quarterly English translation, it was titled Creature From the Depths.

The name Kaijū (海獣) is a play on Kaijū (怪獣), referring to giant monsters like Godzilla.






1968 Anime
Episode 5 - Dai-Kaijū (Part 1) (aired January 31, 1968)
Episode 6 - Dai-Kaijū (Part 2) (aired February 7, 1968)
Movie 1 - Dai Kaijū (released July 21, 1968)
(Movie 1 is a re-edit of Ep. 5 & 6)
1985 Anime
Episode 67 - The Jungle Dai-Kaijū (aired February 21, 1987)
Episode 68 - The Dai-Kaijū's Angry Counterattack (aired February 28, 1987)
1996 Anime
Movie 1 - GeGeGe no Kitarō: Dai-Kaijū (released July 6, 1996)


  • The story is itself a remake of an earlier non-Kitarō rental manga by Shigeru Mizuki called Kaijū Raban (怪獣ラバン), inspired by the film King Kong Escapes.