According to scientists, a creature similar to H.P. Lovecraft's fictional and monstrous sea beast, Cthulhu, did exist at one point — the only difference is it was about 3 cm wide. In a computer-generated model created from a 430 million-year-old fossil, scientists say they've identified a never-before-seen species of sea cucumber which they aptly dubbed, Sollasina cthulhu, after the iconic monster monster feature in H.P. Lovecraft's 'Call of Cthulhu'.