Editor's Note:
The blue glow from bioluminescent plankton light up the Xiaoheishi sea area off the coast of China’s Dalian on April 27, 2017. Photos: CFP
The blue glow from bioluminescent plankton light up the Xiaoheishi sea area off the coast of China’s Dalian on April 27, 2017. Photo: CFP figcaption >