Island of Mutations (Italian: L'isola degli uomini pesce) is a 1979 action-horror film directed by Sergio Martino, starring Barbara Bach, Joseph Cotten and Richard Johnson.

It is the year 1891 and a military doctor, Lieutenant Claude de Ross (Claudio Cassinelli) a survivor of not one, but two shipwrecks, washes ashore on a mysterious, uncharted Caribbean island along with a handful of convicts.

When several of these convicts meet unfortunate ends at the hands of the titular fishmen, Claude and the other survivors flee into the jungle, only to encounter the sadistic Edmond Rackham (Richard Johnson) and his beautiful captive Amanda Marvin (Barbara Bach).

The priestess' prophecy is fulfilled as the film ends with Claude and Amanda attempting an escape from a gun-wielding Rackham, a crazed Shakira, uncontrolled fishmen and the very volcano that doomed Atlantis which awakens and threatens to send what unsubmerged landmass remains to oblivion.

This prologue featured Cameron Mitchell as a sea captain leading a gentleman (Mel Ferrer) who had squandered his family fortune in search of Atlantean treasure on the island.