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
Isla (given name) Isla (given name) Isla ( ) is a feminine given name traditionally of primarily Scottish usage, derived from "Islay", which is the name of an island off the west coast of Scotland. It is also the name of two Scottish rivers. In 2016, it was both the fourth most popular name for baby girls born in Scotland and the fourth most popular name for girls born in England and Wales. It was among the top 10 names given to girls born on the Isle of Man in 2009 and one of the top five names for girls born in Guernsey