Phil Hubbs So when this movie starts we get the standard introduction for a watery monster flick, a live action shot of the ocean rolling and crashing against the rocks. Over said standard introduction we of course get the opening credits which lists our main players. The interesting thing was, once the credits had finished we get some narration. This narration informs us of where and how this movie was shot. I've never come across that before, it was odd to say the least, kinda took you out of the movie...for a moment.The plot to this deep sea tale is a very basic affair, let me explain in the simplest of terms. Julie, a beautiful young woman (Anne Kimbell) goes on vacation in Mexico. Whilst there she meets young handsome marine biologist Dr. Baldwin (Dick Pinner) and they slowly fall in love. The end...nah only joking.After Julie hears a mysterious story about the death of a diver she becomes curious and decides to do some digging. Naturally Dr. Baldwin is skeptical but because he loves her so much he goes along with the investigation. After much deliberating, various tests and chats with the locals, the duo eventually discover that there is indeed a large monster on the rampage in this sleepy Mexican coastal region.So what is the monster you ask? Well its obviously not gonna be a shark, crab or giant eel or whatever because that's too boring. At first I thought it might be a giant octopus, which we are presented with at one point. Luckily its not that either. During the brave duos investigation they actually discover (by accident) a strange piece of gloop. Now because Dr. Baldwin is of course a scientist he knows exactly what to do, stick it under his trusty microscope. After much important scientific type spiel which I'm sure nobody would really listen too intently, they come to the conclusion its a piece of mutated amoeba. Its right at that moment that you the viewer realises that the large roaming monster is in fact a large mutated amoeba. A result of atomic testing? Actually this time I don't think so.Yes the big beastie is actually a large, umm...octopus looking amoeba with one huge comical eye that glows. It looks more like a space alien really. The creature in question looks to be a puppet on strings against an underwater set of varying quality. The creatures large glowing eye is actually pretty cool I thought, definitely brought it to life and gave it some character. Alas it also made it look like a Scooby-Doo monster from the cartoons.Next to that you of course have a lot of stock footage of various sea creatures and a reasonable amount of underwater sequences shot with real divers. There does in fact appear to be a real sequence where a diver fights off a real shark with a knife, and the production does seem to have and utilise a real minisub. Its also worthy to note that this movie does appear to have a score that closely resembles a certain Steven Spielberg movie. Believe it or not but that famous/infamous musical tune does actually appear in this movie. Not the exact same score of course but its damn close. Hmmm I wonder Mr. Spielberg.Other than that its all business as usual really. The Mexican locals are all your bog standard, obligatory stereotypes. Horrendous accents, the men have huge moustaches and the women are all old and covered in veils (although the director, Wyott Ordung, is actually the main stereotypical Mexican local). Dr. Baldwin and all the other scientist blokes generally act like male chauvinists, patronising Julie all the time. Julie often speaks sense, is hard working and is willing to go the extra mile to get to the bottom of the mystery. On the other hand Dr. Baldwin merely thinks this is adorable and treats her like a puppy. Heck there's even a sequence where Dr. Baldwin serenades Julie on the rocks by the ocean in a highly cringeworthy scene that feels somewhat out of place. Not that it matters because the movie was lost way before this. The reason being its just too boring, nothing really happens...like ever! We only see some monster action right at the very end and even then its woefully brisk. We don't see any other creatures or people getting eaten, no carcasses, no tension, no thrills, just lots of talk, some romance and underwater jiggery- pokery. Yeah the giant amoeba is kinda fun to look at but there needed to be way way more of it.3/10

StarGazer77 Having grown up in the fifty's and loving SCI-FI movies produced back then for me they offer an hour or two of pure escape to a much simpler time, before computers, cell phones and even terrorists. Yes, Monster from the Ocean Floor I found to be most entertaining with actors who conveyed a sense of reality and a solid music score that fit this film like a glove. I think those who dislike this film do not understand the Era from which it came. Roger Corman was not out to get an Academy award but to provide us with an entertaining adventure that would temporarily transport you from realty to fantasy and in Monster from the Ocean Floor with me he succeeds. So if you are looking for state of the art special effects or some deep meaning message, look elsewhere and save those critical remarks for a film that deserves them, this one doesn't.

teuthis On the surface, this film appears to be just another entry into the 50's cinema monster mill. But when we dive deeper we find some subtle and entertaining differences. The heroine is remarkably modern. She is brave, independent, determined, and completely oblivious to what the rather effete male characters think of her. The film is actually developed around her persona, and her dogged determination to seek the monster lurking below. The underwater scenes are beautiful examples of early open water cinematography in the lush, cool Pacific Ocean. The submarine is great. I really wanted one when I was a kid and first saw this film. The spunky actress seems to have done her own diving too. The scene in which she tries to fend off the shark is exciting. If you forget the rather weakly done monster, its minimal time on screen, and instead, focus on the enchanting heroine and her quest, this is not a bad film at all. I certainly find it entertaining. I have it on DVD and watch if often.

Jim C. I know many people judge a movie solely on its of special effects. This one doesn't have a lot of eye-candy, even considering the time it came from. But the story and the acting are above par for movies of this type and when all was said and done, I enjoyed myself watching this movie.