In a world where both of our monsters are totally underwater, Gamera VS Zigra does the unimaginable... alien kaiju doing battle at a heavily commercialized area! ..oh, wait. :| Yes, this is Gamera VS Zigra, brought to you by Seaworld.. pretty obviously. This also marks the last Gamera film in the Showa era.. that is, until Gamera Super Monster....
Source: Gamera VS Zigra Movie Review - funny horror movies Decker Shado