Species is a 1995 American science fiction horror film directed by Roger Donaldson and written by Dennis Feldman. It stars Ben Kingsley, Michael Madsen, Alfred Molina, Forest Whitaker, Marg Helgenberger, and Natasha Henstridge in her film debut role. The film's plot concerns a motley crew of scientists and government agents who try to track down Sil (Henstridge), a seductive extraterrestrial-human hybrid, before she successfully mates with a human male.

Plot

During the SETI program, Earth's scientists send out transmissions, such as the Arecibo message, with information about Earth and its inhabitants in the hopes of finding life beyond Earth. After receiving transmissions from an alien source on how to create limitless fuel and an alien DNA sample with instructions on how to splice it with that of humans, the scientists assume the aliens are friendly. Inspired by the second transmission, a government team led by Xavier Fitch commissions a genetic experiment meant to create a female alien/human hybrid organism under the belief that she would have "more docile and controllable" traits. They eventually produce a girl codenamed "Sil", who initially resembles a normal human and develops into a 12-year-old in three months.