Actinostella flosculifera is a small sea anemone (family Actinostolidae) found in shallow Caribbean reef and rocky habitats, typically inhabiting crevices and rubble zones often associated with dead coral substrate. It belongs to the order Actiniaria as a hexacorallian anthozoan, contributing to the diverse fauna of the tropical Western Atlantic. Genomic data have been generated for this species and are available in public databases, enabling comparative studies of cnidarian evolution and ecology.