14 December 2007
Vol 318, Issue 5857

About The Cover

Cover image expansion

COVER Coral polyps with exquisite coral pigments (pocilloporin) remain after bleaching of the southern Great Barrier Reef around Great Keppel Island (Wappaburra), a result of elevated sea temperatures in January 2006. During heat stress, the symbiosis between corals and dinoflagellates fails, leading to mass exodus of the brown plant-like symbionts from the tissues of the coral host. See the Editorial on page 1695, the News Focus on page 1712, and the Review on page 1737. Image: Ove Hoegh-Guldberg, University of Queensland