Antipathozoanthus remengesaui is a zoantharian anthozoan (family Antipathozoanthidae) that grows epizoically on black corals, similar to its congener A. The species illustrates the unusual and geographically widespread nature of the epizoic lifestyle on antipatharian hosts. Its morphology is characteristic of zoantharians, with cylindrical polyps lacking a skeleton and possessing two rows of tentacles around the oral disc. Genomic data have been generated for this species and are available in public databases, enabling comparative studies of cnidarian evolution and ecology.