I've had a recent obsession with circular cropped photos. I think it's especially intriguing with seascapes, because the shape is reminiscent of looking out a porthole. But, the shape also adds some interest to what might be otherwise generic photos as well. I think these would a great way to break up rectangular images in an art collage.
calm seas circlular porthole view print // $29
Circular pale green trees print // $30
desert color circular collage // $13
Yosemite Falls retro colored nature circle print // $42
simple light blue faded ocean waves circle shaped print // $30