Recalling a traumatic moment on the set of Deep Blue Sea, LL Cool J details the time he was almost drowned by an animatronic shark. Released in 1999, Deep Blue Sea follows a team of scientists who are besieged in their facility by a group of genetically-modified sharks while attempting to find a cure for Alzheimer's disease. The movie, which is directed by Renny Harlin and features Samuel L. Jackson, Thomas Jane, and Saffron Burrows, was met with mixed reviews but a strong enough box office performance to justify several sequels.

https://screenrant.com/ll-cool-j-movies-deep-blue-sea-shark/