I received this as a gift, but I haven't had a chance to watch it. On September 18, 1976 (Showa 51), the official feature-length documentary film of the Okinawa Ocean Expo, "Official Feature-Length Documentary Okinawa Ocean Expo," was released in theaters by Toho-Towa. It features narration in a talk format by Meiko Nakamura and Kin'ya Aikawa. It was a phantom film for a long time, as it was not re-released or broadcast on television, but a DVD was released in 2006. (From Wikipedia) - Title: Okinawa Ocean Expo - Format: DVD - Manufacturer: Geneon - Genre: Documentary - Language: Japanese - Color: Color Thank you for watching.