Satanskoraal (DVD)

When Portuguese marine scientists discover that large chunks of coral have gone missing off the Mozambican coast, they call in a rich playboy and an expert in coral, played by Ponie de Wet. He jets offto Inhaca Island with his dog-loving assistant Gamtas, where he meets an English girl who shares his love of diving. The girl, however, turns out to be a decoy, who must distract Ponie while tons of coral are loaded into a submarine. It seems some foreign power wants the material to create a great barrier reef in the Gulf Stream that will freeze England and Europe. But Ponie continues to snoop around, and even sends for his secretary, who shares his knowledge of coral. The villains panic, and decide Ponie must be killed. The adventure culminates in a cat- and-mouse game in the muddy swamps,
where Ponie suddenly starts looking at his secretary with new eyes.