- Dueling Movies: With Jaws and a number of "When Animals Attack" films that were released in the 70s.
- California Doubling: Large parts of the film were shot in Malta and the Marine World animal park in Redwood City, California.
- Fake Nationality: The film's set and shot in Newfoundland, Canada, but most of the leading cast is non-Canadian. Bo Derek, Robert Carradine, Keenan Wynn, and Peter Hooten are all American, and Charlotte Rampling is English. Richard Harris is an exception, since his character is an Irish emigrant.
- Follow the Leader: Several elements seem directly lifted from Jaws, most clearly Nolan's death scene and Bo Derek's attack scene, both of which draw heavily on Quint's death scene. Ironically, Jaws: The Revenge would go on to lift major elements of Orca, most notably in giving the animal human-like motivations for revenge.
- No Stunt Double: The 46-year-old Richard Harris insisted on performing his own stunts in the polar sequences and was nearly killed on several occasions.
- Old Shame: While Richard Harris wasnt ashamed of the film and enjoyed his experiences on-set, he did admit that he regretted turning down the chance of being in Ingmar Bergmans The Serpents Egg. That said, he would become furious if you claimed Orca was a Jaws rip-off in front of him.
- Science Marches On: Turns out orca males don't stay with their mates or have much, if anything, to do with their own offspring, making its Papa Wolf behavior unlikely.
- What Could Have Been: Had the film been a success at the box office, audiences would have been treated to, OF ALL THINGS, King Kong vs Orca. With both of them apparently being cyborgs.
Trivia / Orca: The Killer Whale