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 in which the illustrations were drawn to look like still images from the film. Tintin, Snowy, Captain Haddock and Thompson and Thomson head out to Cuthbert Calculus' estate on a mysterious lake in Syldavia. They end up discovering a large criminal gang in a base on the bottom of the lake ruled by Tintin's old enemy Rastapopoulos, who goes under the name of 'King Shark'. Calculus has invented a machine which can reproduce objects in three dimensions, which Rastapopoulos tries to steal to use in an art forgery racket. He tries to drown Tintin, but Tintin escapes. Rastapopoulos is apprehended by Tintin and Haddock. Most Tintinologists do not consider this adventure as part of the official canon, and Hergé himself disowned it. The film itself is often poorly rated. Calculus' shark-like mini-submarine from Red Rackham's Treasure plays an important part in the film, though this time it is piloted by Haddock. Tintin befriends two local children who are held captive in the submerged base and escape in an underwater tank. This is similar to an escape made by Hergé's Jo, Zette and Jocko in The ‘Manitoba’ No Reply.