6-Headed Shark Attack is what happens when you have a shark with five heads, who then suddenly grows a sixth one. Get it? Its simple math. This film is the irregularly titled fourth installment in the "Multi-Headed Shark Attack" film series. It was directed by Mark Atkins with a screenplay written by Atkins and Koichi Petetsky. It first aired on Syfy on August 18th, 2018.