Add to ORKGA study of the taxonomy of the holothuroid fauna was conducted from September 1991 to May 1992 in San Juan, La Union. Collected specimen were preserved with denatured alcohol and stored at the undergraduate thesis laboratory of De La Salle University. Spicules were examined after maceration of the dorsal and ventral sides and papillae of each specimen under the microscope. Classification was based on the studies done by Domantay (1960), Geronimo (1976) and Leonardo (1904).Eight species were identified and classified down to the species level. Seven species belong to Order Aspidochirotida, (Malodeima) pulla, Holothuria (Metriatyla) scabra, Actinopyga echinites, Actinopyga lecanora, Bohaschia graeffei and Bohadschia marmorata one species fall...
