 Symbiodiniaceae is a diverse group of dinoflagellates that live in close association with various marine organisms, including corals, sea anemones, and jellyfish. Genomic studies have revealed considerable genetic diversity within these groups, but there is still much to be learned about how this diversity affects the evolutionary trajectories of these organisms. This paper provides a comprehensive review of the current state of understanding of symbiodiniaceae genetics, identifying key challenges, and suggesting potential solutions. The authors suggest that further collaboration between researchers and the development of new technologies could help to advance our understanding of symbiodiniaceae diversity and its implications for the evolution of these organisms. This article was authored by Sarah W. Davies, Matthew H. Gommash, Lauren I. Halker, and others.