Journal of Aquatic Ecology

Changes in the color of sea water caused by algal bloom has continuously risen in recent decades. This increase is due to the harmful effects of human activities that allow sea water to change from a normal to an abnormal state. Satellite sensors are the most accessible, cost-effective means of monitoring. They have been allocated to a large number of marine science studies. The MODIS satellite data that examines changes in color of the sea has been used in this study. In the Persian Gulf and Oman Sea, red tide phenomenon began October 2008 and continued until May 2009 with a high intensity that covered large areas. The results showed that the use of different algorithms and necessary corrections could be achieved in the concentration and size of red tide by color changes of the sea water, marine and oceanic detected by satellite sensors, and extent of changes found.