ABSTRACT SWIRL PATTERN by Duncan P. Walker,
from http://www.istockphoto.com.
Visit Duncan's website at http://walker1890.co.uk/

Relief from Chichen Itza,
scanned from INCAS, AZTECS AND MAYAS,
published by Bellerophon Books.
Visit Bellerophon's website at
http://www.bellerophonbooks.com.

MACRO OF IRIS by Luca Di Filippo from http://www.istockphoto.com.
Visit Luca's website at
http://www.lucadifilippo.com.

Photo #605978 from
http://www.istockphoto.com.
Artist and model unknown.

GREEN SNAKE by pailoolom,
from http://www.istockphoto.com.

WILDLIFE by jeryltan
from http://www.istockphoto.com.