This without a doubt is the most Terrifying movie I have ever seen. I watched this movie in Theaters back in 1978 This movie scared the s*** out of me as a kid and as an Adult it still haunts me :o After watching this movie I have a fear of flying on planes and the Ocean :/ And sharks are my worst Nightmare I have a phobia after watching Jaws and this movie. But This movie compared to Jaws used real shark footage which made this movie scary and real + this movie was based on a true story and events that happen. I recommended this movie to anyone who likes scary shark movies or movies like Alive,or the magnificent Survivors of the Andes Mountains. And if you're into watching old classic foreign films from 1978 then get this one.I bought this one and got my moneys worth and was impressed by the quality of the film being an old 1978 movie. The Movie was in English language and only downside was I wish they had the option to switch to Spanish language but it don't :( I think next I will buy the Spanish version of this film just to have both in my collection.