Turkey June 16, 2017 8:11 pm Phytoplankton Bloom Changes Turkey's Water Color to a Beautiful Turquoise The waters around Istanbul have turned a striking shade of turquoise due to an annual bloom of phytoplankton. US & World Videos 2:58 Karen Read trial: Defense accuses prosecution witness of perjury 2:24 Gov. Maura Healey reacts to Steward bankruptcy filing 2:33 Karen Read trial resumes Monday 2:07 Steward Health Care files for bankruptcy 3:17 Northeastern's graduation disrupted by 23-year-old who was then detained by police