Millepora complanata, the blade fire coral (family Milleporidae), is distributed in the Caribbean Sea and Gulf of Mexico, forming flat, blade-like or encrusting calcareous colonies with fused irregular sheets. Fire corals are important reef-building organisms in the Caribbean and are susceptible to bleaching due to their Symbiodiniaceae photosymbionts. Genomic data have been generated for this species and are available in public databases, enabling comparative studies of cnidarian evolution and ecology.