I had started to the octopus model as a personal project in my free times. I discovered the fine details when studying reference photos and videos. It was a little bit complicated to model and unwrap uvs of a 8 legged creature with hundreds of tentacles.
Finally I satisfied with the result. After a few months later I uploaded it to the Turbosquid. It rose to the first place in the website's search results cause of its model quality and sales.