Now there comes evidence from a metagenomic study (which should, of course, be metaviromic) that invertebrates such as corals also have a a variety of herpesviruses, and that these may well be stress-activated: Rebecca Thurber and colleagues, in the 25th November issue of PNAS, have published an analysis of the incidence and effects of hitherto-unknown herpesvirus-like agents found in finger coral