Micromussa lordhowensis is a large-polyped scleractinian coral (family Lobophylliidae) found in Indo-Pacific reef environments, particularly known from Lord Howe Island and eastern Australian reefs, forming encrusting to low-mounding structures with large, fleshy, brightly colored polyps in red, green, orange, and purple morphs. The species is popular in the marine aquarium hobby and is recognized for its striking coloration. Its ecology, genetics, and susceptibility to bleaching have been studied in the context of high-latitude coral reef conservation at the southernmost Indo-Pacific reefs. Genomic data have been generated for this species and are available in public databases, enabling comparative studies of cnidarian evolution and ecology.