Habitat: Common on mangrove roots. Distribution: Caribbean, Florida, Brazil. Characteristics: Massive-amorphous to globular. Black externally and tan internally. Surface smooth to the eye, but microconulose under the microscope (conules 0.2 mm high, 1 mm apart). Membrane-bearing oscula (0.5-1 cm) dispersed irregularly over the sponge body. Compressible, easy to cut.