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
Great Lakes Aquarium executive director. Since 2008, a philosophy of continuous improvement has been adopted starting with a program called "The Three R's"; repair, replace or remove all defective exhibits from the exhibit floor. Plans for new exhibit galleries and expanded educational outreach are ongoing. GLA is a not-for-profit 501(c)3 organization. Great Lakes Aquarium The Great Lakes Aquarium opened in 2000 and is located on the Duluth waterfront. A 501(c)(3) private nonprofit, its mission is to inspire people to explore their connection to Lake Superior and waters of the world. Great Lakes Aquarium features animals and habitats found within the Great Lakes basin