Our oceans are full of fascinating animals. Some of them are big, some are small, and some are pretty terrifying. We know more about outer space than the deepest ocean. That means there are a lot of unknown animals living in the deeps.

Every year, scientist discover new animals living in the ocean. Some of them live where the pressure is incredible and others live where there is no light present. This means they have to adapt. A lot of them look like real monsters.

Old stories are full of sea creatures with strange appearances. We assume most of them are made up, but some may be based on real creatures that live deep under water. Some that have never been seen before.

Here are 35 terrifying creatures that live in the ocean. They are all monstrous in appearance, but some aren’t as scary as they look. Some are a threat to humans and some aren’t. All of them are creepy.