Baltic Algae Bloom

A massive bloom of cyanobacteria is seen in the Baltic Sea. In August 2015, a bloom spanning more than 100 square kilometers covered these waters. Cyanobacteria are a type of marine bacteria that capture and store solar energy through photosynthesis. While some are toxic to humans and animals, large blooms can cause an oxygen-depleted dead zone where other organisms cannot survive.

55.693089°, 18.730060°