Graphical AbstractDevelopment, life cycle evolution and immunity were among the topics discussed at a recent meeting in Tutzing dedicated to the biology of the ‘basal’ metazoan taxa Porifera, Ctenophora, Placozoa and Cnidaria.

The biannual international workshop entitled “The diversification of early emerging metazoans: A window into animal evolution?” took place at the Evangelische Akademie Tutzing, Germany, 11–14. September 2017. It was organized by Thomas Bosch (Kiel), Thomas Holstein (Heidelberg), and Ulrich Technau (Vienna), and it was sponsored by the Deutsche Forschungsgemeinschaft (DFG). The meeting gathered over 140 researchers to discuss the contribution of non‐bilaterian metazoan models (Porifera, Ctenophora, Placozoa, and Cnidaria) to our understanding of: a. The evolution of metazoan developmental processes; (...) b. Fundamental molecular mechanisms underlying metazoan features; and c. The complex interactions that animals establish with their environment. (shrink)