Photomicrograph at low magnification from elkhorn coral (Acropora palmata) found with multifocal tissue loss in the Dominican Republic

Photomicrograph at low magnification from elkhorn coral (Acropora palmata) found with multifocal tissue loss in the Dominican Republic. A flatworm (fw) is present along a multifocally ulcerated coral surface body wall (c) along one polyp. A small amount of cellular debris can be seen within the pharynx (p) of the flatworm. Coral polyp structures are visible within the tissue (cp).