I am proud to present Edwin's https://www.artstation.com/artist/edwintenwolde and mine joint artistic endeavor (first of many, I hope)! We decided to challenge each other with quick concept sketches of creature mashups and to elaborate them into finished illustrations. He did a cool concept of a shark/pangolin hybrid so I proceeded to tweak it just a little (making it more mammal-like) to show the speculative evolution of a cetacean pholidota mammal.