this video I found at a goodwill for $.99 on VHS. CHEESY!! totally dated I guessed 1977 and I was right. I wonder if this is a public domain film. I wonder who owns the copyrights,I bet they may sell them to me for cheap. .shark footage is pretty good .with that horrible line of dialog,in fact it is better than that.Overall, while this is really cheesy and dated. it is very entertaining just for that 70's feel and for the shark footage.Surprised by the violence in this film;its disturbing.the mental anguish and deranged lunatic of the main character is frightening.If you run across this film, get it.its worth watching one time!!!