“There’s no finer place to be on a hot day than in water, but I quickly tire of swimming, so recently, I began bringing an underwater camera to the lakes and rivers near my home,” said Erik Hoffner. “A favorite subject is lily pads: the green chloroplasts are only present on leaf surfaces exposed to direct sun, so submerged leaves remain vibrant shades of red. Air bubbles trapped on their undersides are highly reflective and add a whole new dimension to the colors.”