Williams,-E.H.,Jr.; Bunkley-Williams,-L. Bleaching of Caribbean coral reef symbionts in 1987-1988. PROCEEDINGS-OF-THE-SIXTH-INTERNATIONAL-CORAL-REEF- SYMPOSIUM,-TOWNSVILLE,-AUSTRALIA,-8th-12th-AUGUST-1988.- VOLUME-3:-CONTRIBUTED-PAPERS-MINI-SYMPOSIUM-11-16-TO-22. Choat,-J.H.;Barnes,-D.;Borowitzka,-M.A.;Coll,- J.C.;Davies,-P.J.;Flood,-P.;Hatcher,-B.G.;et-al.-eds.. 1988. pp. 313-318. The most widespread and intense bleaching ever reported in the tropical and subtropical western Atlantic occurred in 1987-1988. South Florida, the Bahamas, and the northern Caribbean were the most severely affected areas. Bleaching occurred there and in parts of eastern Colombia and off Texas from summer through fall of 1987. In late fall to early winter recovery began in these areas, while bleaching began in much of the remaining Caribbean at that time. More than 80 species of coral reef symbionts, representing 3 phyla and 14 orders, and including the most important reef building corals, bleached in the West Indies. Many coral reef symbionts suffered necrotic damage and/or death. Almost all parameters of the event differ greatly between locations, within locations, and among species. High variability may be the most common factor.