Habitat: In Bocas, common on mangroves roots, while in other localities it is reported from cryptic reef habitats and seagrass beds as well. Distribution: Colombia, Curacao, Panamá, Venezuela. Characteristics: Thick to thin encrusting (1-5 mm thick). Oscules (2-4 mm wide), volcano shaped, with transparent membranes. Withish to to yellowich or light purple in color. Soft and fragile, almost crunchy to the touch. C-shaped sigmas abundant.