Advances in Marine Biology has always offered marine biologists in-depth and up-to-date reviews on a variety of topics. As well as many volumes that provide a selection of important topics, the series also includes thematic volumes that examine a particular field in detail. Two recent thematic volumes, one on ocean biogeography and another on the biology of calanoid copepods, provide comprehensive reviews of these topics and include previously unpublished data. This volume contains two detailed reviews. The first discusses the population genetics of bathyal and abyssal organisms. The second covers growth performance and mortality in aquatic macrobenthic invertebrates.