Abstract
Data records since from 2008 to 2012 show the occurrence of the coral reef bleaching, an increase in population of jellyfish and a decreasing presence of some migratory marine mammals in the Persian Gulf has increased. Results of our biometric methods on jellyfish of the Persian Gulf (Aurelia aurata), show a significant increase in size during the last four years (p < 0.05). Our studies in the area showed that in the sampling areas in close proximity to superhot wastewater of industries cooled in terrestrial pools and then emptied into the sea, the abundance of the Aurelia aurata was significantly lower than in regions where superhot water was directly emptied into the seawater. This paper will review the effects of global warming, especially in the Persian Gulf.