Habitat: Common on mangrove roots. Distribution: Belize, Venezuela, Panamá. Characteristics: Shape: thin encrusting on mollusc shell, 1mm thick Color: external deep indigo/blue blending to olive green internally Consistency: soft Surface: smooth surface texture with spicules visible erupting through ectosome Apertures: oscules 1mm diameter Skeleton: tylostyles only in 2 size classes (150um, 400um length) (5-8um diameter) Spicule tracts composed of large tylostyles with a bouquet of smaller tylostyles at external surface