Fossil Porites Coral (IMAGE) Woods Hole Oceanographic Institution Caption Fossil Porites coral (above) from the southern Mentawai Islands (Indonesia) in the eastern Indian Ocean were used to reconstruct Indian Ocean Dipole variability over previous centuries. Credit (Photo by Nerilie Abram, Australian National University) Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.