Male Narwal, or unicorn (Fig. 1), under side view of Narwhal (Fig. 2), Greenland Shark (Fig. 3), under side view of Greenland Shark (Fig. 4), Eye of Greenland Shark (Fig. 5)

Side and ventral views of a male narwhal. Side and ventral views of a Greenland shark with a detail of its eye. Scale is 3/8 inch to a foot. Attributions are given at bottom of page.