text: Writing of corals, the authors say "it has been shown that it is possible for colonies to acclimatize to increased temperatures and high irradiance levels so that they are able to resist bleaching events when they occur." And they note, in this regard, that "threshold temperatures that induce coral bleaching-related mortality vary worldwide -- from 27??C in Easter Island (Wellington et al ., 2001) to 36??C in the Arabian Gulf (Riegl, 1999) -- according to the maximum water temperatures that are normal in the area, implying a capacity of corals and/or zooxanthellae to acclimatize to high temperatures depending on their environment."