Tintin and the Lake of Sharks (originally known as Tintin et le Lac aux Requins) is a Tintin animated film, directed by Raymond LeBlanc (1972). It was not written by Hergé, who supervised, but by the Belgian comics creator Greg (Michel Regnier), a friend of Hergé. It was later adapted into a comic book with still images from the film used as illustrations.

In this sequel to The Seven Crystal Balls, Tintin is involved in one of his strangest and most colorful adventures. Tintin, Snowy and Captain Haddock have a kidnapping on their hands. Professor Calculus has vanished. His disappearance is certainly connected with an ancient curse of the Incas, and the trail leads to Peru. But everyone fears the vengeance of the Prince of the Sun and only Zorrino, the young orange-seller, will help them. High into the Andes they go, but the perilous journey ends in a dungeon and the prisoners face a hideous end.

Tintin and Captain Haddock travel to Istanbul to collect an inheritance, a ship called the Golden Fleece. But why does the ship's seemingly worthless cargo interest a local businessman? After a number of attempts on the Captain's life Tintin begins to suspect there's more to the ship than meets the eye. What is the mystery of the Golden Fleece?

Review (from The Pocket Essential Tintin): First live-action Tintin film, based on an original story. The casting is inspired, and the well-directed story captures the spirit of Tintin, although without the subtleties and multi-layered qualities of the comics. The Greek and Turkish locations add the required exotic note.

Professor Calculus is sent some mysterious blue oranges in the post, but when an intruder tries to steal them, Tintin and Haddock realise they're more valuable than first realised. They travel to Spain where the Professor is kidnapped, and the mystery deepens.

Review (from The Pocket Essential Tintin): Second live-action film, based on an original story. The casting does not work as well as in the previous film: Talbot (as Tintin) is starting to look his age and Bouise (as Haddock) is not as good as Wilson. On the other hand, Jenny Orléans is a great Castafiore. The direction is not quite as dynamic and the story skews too young.