View Comments Amazingly this isn’t Photoshopped, these animals exist (15 Photos) » strange-looking-animals-weird-6 Author: Bob | January 14, 2013 | In: Animals, Creepy, WTF Helicoprion is a shark that swam in the Permian seas about 290 million years ago; it is an unusual shark in that it has a spiral dentition. Tweet Thanks! blog comments powered by Disqus