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Reefs are benthic biotas that have an important role in marine ecosystems, where its growth is strongly influenced by environmental conditions. A massive coral has capacity to records environmental condition. This can be traced through the process of deposit calcium carbonate (CaCO3). Deposited coral skeletons of species Porites lutea are able to provide information in determining the rate of corals growth that is seen in its annual band. Sampling technic of corals was carried out by using pneumatic drill and then the coral samples were analyzed using X-rays to gain its directions, ages and growth rates. The research results showed that growth rate of corals P. lutea at the north station (windward) was in a range of 0.6-2.3cm/year and its average growth rate was 1.20cm/year. The coral growth at southern station (leeward) was in range of 0.5-1.9cm/year and its average growth rate was 1.11cm/year. There is not significant correlation at windward (R2 = 0.1922) and leeward (R2 = 0.201) between P. lutea growth rate with sea surface temperature. However, there is a decreasing trend of coral growth from 1982 to 2014. There are three lowest peak were observed during El Niño event in 1983, 1993, 1998 with the growth rate respectively are 0.9cm/year, 0.7cm/year, and 0.5cm/year

The Growth Rate of Coral Porites Lutea Relating to the El Niño Phenomena at Tunda Island, Banten Bay, Indonesia