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
Alliance for the Great Lakes Alliance for the Great Lakes The Alliance for the Great Lakes is the largest and oldest citizens' environmental organization dedicated to the protection of the Great Lakes. With more than 20 staff and six offices, its mission is to conserve and restore the world's largest freshwater resource using policy, education and local efforts, ensuring a healthy Great Lakes and clean water for generations of people and wildlife. Throughout its history, the integration of public engagement and sound policy have been the cornerstone to its approach to Great Lakes restoration and protection. The proliferation of nuclear power plants around Lake Michigan