But one of the largest creatures to ever swim the the sea wasn’t exactly a fearsome predator; Shastasaurus was a specialized suction feeder, eating mainly fish. That’s terrifying. They look like giant alien blobs. It can be found in the streams and rivers of Amazon, Orinoco, Scandinavian waters and Papua New Guinea. It’s also really good at scaring off predators. The frilled shark is also rarely seen and lives in the dark depths of the oceans. dot pattern2 These apex predators have sharp teeth and are lightning fast. This giant jellyfish floats through the ocean harmlessly, but it can conjure up a few screams. This fish has an eye that floats above its head. These fish are horrible looking. It has a huge gaping mouth that it uses to gulp up other animals. This looks like an alien, but it’s actually a jellyfish. This is more gross than scary, but if it attacked, you might freak out for a minute. These appendages are longer than its body and they are used to collect food and water. It has a fleshy growth extending from its head and is used by the fish as a bait to attract its prey and eat it. Source: Stuff Point, swiggle1 It lives in drops of water. Even worse, it smells horrible because it releases Trimethylamine Oxide. If one decided to eat you, you wouldn’t stand a chance. Dragons don’t exist, right? Stuff Point dot pattern2 It attaches to the tongue and eventually eats it away. MNN Sea pens look like they should be growing on another planet. Scientists believe they are some of the oldest fish to have lived. dot pattern2 Every year, scientist discover new animals living in the ocean. Its sharp teeth make it appear ferocious. The Gulper Eel is a truly terrifying creature. Source: Australian Museum, swiggle1 It is really a unique fish for its large head, big mouth, large teeth and the techniques that it uses for catching its prey. They aren’t seen often and live in deep waters. Source: Huffington Post, swiggle1 All rights reserved. You might think you are free from snakes in the ocean, but the sea cucumber looks a lot like one. Can you imagine seeing something like this making its way toward you in the ocean? They are often the star of many scary films. It is difficult to see such creatures while fishing or diving and this is why we bring them to you. You may have encountered one before and not even known it. swiggle1 It has a huge spiked tail and long sharp teeth. You can see inside of it. They actually live in the ocean and can grow to huge sizes. This fish looks like it has just given up. It can be found 50 meters below the surface of the ocean whether it is the Pacific, Atlantic or Indian Ocean. It lives in oceans and actually helps keep them clean by eating all the carbon in the water. They can grow to over 2,000 pounds. It is a tiny silver fish as it is about one to five inches in length, however it makes you scared once you look at it. Its organs are just as creepy. 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