Algae is a term used to describe a wide variety of aquatic photosynthetic organisms. This includes both macroscopic, multicellular organisms (seaweed) and microscopic, unicellular organisms (cyanobacteria). Algae can survive almost any marine or land environment that has sufficient water, nutrients and sunlight. Run off from agricultural activities, causes excess nitrates and phosphates to enter aquatic ecosystems leading to algal bloom.
Since 2010 the Environmental Working Group (EWG) has recorded the location of algal bloom in United States. There has been a significant rise in the number of state by state news reports related to algal bloom.
However, algae is a great feedstock for biofuels. The waste from this process is commonly used to make nutrients for farming, animal feed and nutritional supplements for humans (Chlorella, Spirulina, and Omega 3).