Can You See Me? by Ted Lewin
Stripes of All Types by Susan Stockdale
Twilight Hunt: A Seek-and-Find Book by Narelle Oliver
Blue Chameleon by Emily Gravett
More than one title may be explored to demonstrate a science concept such as camouflage. There are also some great sites to use as activity resources:
Swirl by Swirl by Joyce Sidman
Explore shells, make a tornado in a bottle, coil a fake snake to see the swirls in nature.