I wish I could say that I've been close enough to a Hammerhead to take a really great picture up close, but they do make a nice silhouette with their unusually shaped head. Their two eyes at opposite sides of the flat head have an overlapping field of vision so that they have a keen depth of field. They can also see well above and below and when moving their heads side to side can see what is behind as well. See also White-tip Reef Shark.
This image is available in 6 x 9 inches.