Phytoplankton

Hundreds of shades of blue are marbled together in today’s image. No, it's not a work of modern art, it's a perfect example of the beauty and complexity of nature. This is a satellite photo of phytoplankton blooming near Alaska in the United States as the cool, salty Chukchi Sea mingles with warmer, fresher water closer to shore.
© Norman Kuring/Kathryn Hansen/U.S. Geological Survey/NASA