Marketed in America under the title "Great White," the film had a rather large advertising budget of over four million dollars. Shortly before the film's release, Universal Pictures filed suit against the producers claiming the film was too derivative of Jaws (1975). Universal won the lawsuit and "Great White" was pulled very shortly after its release.
Released in Spain as if it was the third part of Jaws (1975).
A clip of this movie is on "The 50 Worst Movies Ever Made" DVD Region 1 NTSC.
Theatrical trailer is on "Dusk To Dawn Drive-In Trash-O-Rama Vol. 1" DVD.
L' Ultimo squalo got released on video in Japan as "Jaws Returns", a supposed "sequel" to Jaws (1975). The box cover art even contains the same Jaws font/logo used on all promotional materials for the Steven Spielberg film.