Completely and utterly. Over the last decade the advent of molecular taxonomy has completely revolutionised coral identification. The old taxonomic framework, which was based largely on morphology and field observations, has undergone major revision leading to many name changes and reassigments. Molecular techniques have given scientists a way of testing the old morphological taxonomy and some 'natural groupings’ (family, genus, species) established in the 19th and 20th centuries have been shown to be either in need of review or complete reclassification. Essentially there has been a lot convergent evolution among the corals whereby things that look similar have actually arrived from divergent evolutionary origins.  Long story short there is still much research to be done to re-define old and new coral families alike, and to identify and describe the true nature of corals species. That said the hard work has been done at the genus level hence this new edition of the Coral Finder. This is good news for anyone interested in coral ID for survey and resource management work because genus level data for surveys is well worth doing using the new framework captured by Coral Finder. Moreover learning coral genera is the simplest and most comprehensive way to grapple with species level ID which, for ~50% of the fauna, remains stable and reliable.BYOGUIDES have spent the last decade shooting pics in the Coral Triangle to expand the visual coverage of the Coral Finder. With over 1730 photos and twice as many pages as the previous edition it is the only coral ID resource on Earth that is up-to-date, practical and easy-to-use.