Sea waves are illuminated with the soft blue light emitted from phytoplankton in a recent picture taken on Daheishi Beach in Dalian, Liaoning Province. Various species of phytoplankton, known as dinoflagellates, emit biological light (or bioluminescene) under the right conditions. Photo: weibo.com

Photo: weibo.com

Photo: weibo.com

Photo: weibo.com

Photo: weibo.com