Cyanotoxin which is why they are usually green or blue. Cyanobacteria are found almost everywhere; in oceans, lakes and rivers as well as on land. They flourish in Arctic and Antarctic lakes, hotsprings and wastewater treatment plants. They even inhabit the fur of polar bears, to which they impart a greenish tinge. Cyanobacteria produce potent toxins, but they also produce helpful bioactive compounds, including substances with antitumour, antiviral, anticancer, antibiotic and antifungal activity, UV protectants and specific inhibitors of enzymes. Cyanotoxins are often implicated in what are commonly called "red tides" or "harmful algal blooms". Lakes and oceans contain many single-celled
Parisa (given name) Parisa (given name) Parisā () (pronounced pə-REE-sa) is a Persian given name for girls that means 'like a fairy'. The ancient Persian name "Parysatis" () is related to this name. Two notable women with the name "Parysatis" are: Parysatis, who was the wife of Darius II (), ("Dārayavahuš"), king of the Persian Empire and Parysatis II, the youngest daughter of Artaxerxes III of Persia, who was the wife of Alexander the Great. "Pari" can be used as a diminutive of Parisa. Pari () (pronounced pər-REE) means "fairy" and is used as a name of its own right as well. Pari