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 Maritime Academy semesters at sea. Upon completion of course work and sea projects, deck cadets write the U.S. Coast Guard examinations for licensing as a Third Mate Great Lakes and Oceans Unlimited Tonnage and First Class Great Lakes Pilot. Engineering cadets write the U.S. Coast Guard examination for licensing as a Third Assistant Engineer, Steam and Motor Vessels of any Horsepower. Graduates are fully compliant with STCW '95 (Standards of Training, Certification and Watchkeeping). In 2013, Northwestern Michigan College won approval to offer a bachelor of science in maritime technology through the academy. The college awarded its first bachelor's degrees to two