Confusion at the start of this.

This was first released in 1936 as The Great Manta and shown in Great Britain as The Sea Fiend. Also, a Spanish-language version, El diablo del mar, directed by Juan Duval using some of the same actors and footage, was released in the United States.

Ten years later, it was re-released with a little something for daddy: stock footage inserts of topless native girls. But what about the Hays Code, you may ask? Well, they tolerated partial nudity in native scenes, so this was all good for them.

This is filled with stock footage of nature, fishing and even more nature. Somewhere in here, a giant manta ray is attacking villagers. They tell us it’s big, but we never see it at the same time as humans, so who are we to say?

Barry Norton, the hero of the Spanish version of Dracula, is the lead. And the Spanish-language version has Movita in the cast. She was married to boxer Jack Doyle and to Marlon Brando, who left her for another actress in Mutiny on the Bounty with both of them, Tarita Teriipaia.

You can download this from the Internet Archive.