<p>Scientists have discovered the deepest known evidence of coral reef bleaching, more than 90 metres below the surface of the Indian Ocean. Identified during a research cruise by scientists from the University of Plymouth, the damage to the deeper reefs in the Central Indian Ocean has been attributed to significant changes in the region’s ocean temperature caused by the Indian Ocean Dipole. The researchers have also warned such incidences are only likely to increase as a result of present and future climate change</p>