Witnesses tend to describe an animal with sleek, rubbery, blackish-gray skin, about twenty feet long. Nessie usually has the serpentine body that is typical of sea serpents and lake monsters, furnished with humps along its length, and one or more sets of paddles. Nessie's head is often described as roughly horse-shaped, it may have a straggly mane running down its neck, and some witnesses report small horns or a crest, especially those who see the Loch Ness monster from close up. Sometimes, witnesses report a smaller, rounded, turtle-like head. This head is the one that seems to appear in most of the famous Nessie photos.