Shark Attack 3: Megalodon is the second sequel to Shark Attack, released in straight to video. The film is notable for featuring John Barrowman, who later found fame in popular shows such as Doctor Who and Torchwood. Barrowman has said in an interview on Friday Night with Jonathan Ross that he only did the film. Action · When two researchers discover a colossal shark's tooth off the Mexican coast their worst fears surface - the most menacing beast to ever rule the waters is still alive and mercilessly .. Today I saw a movie called 'Shark Attack 3' and everything I had come to believe was shattered. THIS is truly the pinnacle of human. 26 Nov Audience Reviews for Shark Attack 3: Megalodon. ½. Possibly one of the greatest bad movies ever made! The fact that it takes itself seriously is what makes it so unintentionally hilarious. Worth watching just to see how bad it is. Congrats to David Worth for directing one of the most enjoyable films in recent.