New research published in PeerJ by Dr. Sarah Davis and 61 scientists from 12 countries presents a perspective to build consensus around the assessment and interpretation of Symbiodiniaceae diversity. Symbiodiniaceae is a family of marine dinoflagellates (plankton) notable for their symbiotic associations with reef-building corals, sea anemones, jellyfish, marine sponges and other marine invertebrates. Understanding Symbiodiniaceae is important to those working to protect and regenerate coral reefs that are under threat around the world.