Coral bleaching is the process by which corals expel the algae(zooxanthellae) that are living inside them. The algae and the coral are in a symbiotic relationship where the coral provides protection and nutrients to the algae while the algae use the polyps ' nutrients, along with the process of photosynthesis, to produce food for the coral. Without the algae, the source of their brilliant colors, corals turn white. The absence of the algae also puts the coral under greater stress, making it more susceptible to disease and death. One study by Loya, Sakai, Yamazato, Nakano, Sambali, and Woesik (2014) claimed that rising global temperatures were effecting this change by increasing ocean temperatures, which in turn were facilitating the growth of bacteria that reduce the density of …show more content…
In his study, teams observed various species in reefs throughout the world. Their findings were impressive. While some species, such as lobsters and groupers, were suffering a decrease in number because of over fishing, others, such as sea urchins, were growing in population due to a reduction in predators. In the end, the results of both studies were similar, demonstrating the concept that Hodgson described, “Over fishing of key fish species, in addition to reducing their numbers, can lead to a physical breakdown of the coral reef system.” (p.