Black Sea bloom
(Photo : NASA)

An unusually large bloom of phytoplankton has transformed the Black Sea — so named for its dark color — into a turquoise so bright it can be seen from space.

Phytoplankton are microscopic organisms that live in both salt and fresh water. Like land plants, they use chlorophyll to capture light and photosynthesis to convert it to energy. And sometimes the show is downright stunning.

The Black Sea bloom this year is the brightest since 2012, according to Norman Kuring, a NASA ocean scientist. The colorful composite images that NASA created have been circulating on social media since May 29, when the Moderate Resolution Imaging…