Even though these red tides mostly happen in the late summer and early autumn, sometimes the time of occurrence depends on the different temporal pattern in each region. There is no single cause of red tides, but there must be an abundant amount of nutrients in the water to support the explosive growth of dinoflagellates. Coastal water pollution produced by humans, low salinity levels, and increases in sea water temperature have been contributing factors in red tides. The occurrence of red tides in some locations appear to be entirely natural like when the weather begins to get cooler, causing winds to blow, resulting in the disruption of the settled ocean floor in a process called “upwelling”. Upwellings are powerful deep currents which bring nutrients to surface waters. These currents come from nutrient-rich bottom layers of the ocean which bring massive amounts of deep-water minerals to the surfaces. Good temperature, salinity, and light conditions at the time of the upwelling, makes it very easy for the nutrients to supply poisonous organisms, thus makes it the first step to a quickly multiplying harmful algae bloom. Climatic changes greatly affect the frequency of occurrences because it takes cool winds and a cool climatic temperature for the upwelling to occur. The waters also have to be at a higher temperature, if the waters are too cold, the developing of nutrients may not be able to take…