Epizoanthus scotinus is a zoantharian (family Epizoanthidae) found in temperate to subtropical marine environments, typically encrusting sponges or other colonial invertebrates and forming colonies of small polyps connected by stolons while incorporating foreign particles into the mesoglea. The species is part of the broad zoantharian radiation in temperate Pacific waters. Genomic data have been generated for this species and are available in public databases, enabling comparative studies of cnidarian evolution and ecology.