Gappa, the Triphibian Monster
An expedition in the South Pacific lands on a tropical island where the natives worship the mysterious deity Gappa. An earthquake opens up an underground cavern and a baby reptile is discovered inside. The natives warn the foreigners to leave the hatching alone, but they don't listen and take it back to a zoo in Japan. Soon after, moma and papa Gappa start smashing Tokyo looking for their kidnapped child.
Top cast
Tamio KawachiHiroshi Kurosaki
Yōko YamamotoItoko Koyanagi- Yuji OkadaDaize Tonooka
Kōji WadaMashida
Tatsuya FujiGeorge Inoue- Keisuke InouePresident Funazu
Zenji YamadaCaptain of the Kamome-maru- Bumon KaharaElder
- Kōtarō SugieReporter #1
Saburo HiromatsuHosoda- Toshinosuke NagaoCmdr. Riku
- Masaru KamiyamaThe Professor
Below are the streaming services currently carrying the movie “Gappa, the Triphibian Monster” in Canada, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in Canada can differ from other countries.
Where to watch Gappa, the Triphibian Monster in Canada
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Not currently available on the supported providers in Canada.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 13 Sept 2026.