I created a narwhal for a small Android game, Diabetic Narwhal, that I was working on. I included both the un-textured gray version and the one used in the game, having a blue texture, gold and white horn, and of course, an insulin needle belt. 

If these would be of any use to you, feel free to use either or both. If requested, I can also include the eight frames of either as individual frames, zipped and sent as eight images.