Habitat: On mangroves, and reefs (5-15 m deep). Distribution: Wide Caribbean, Florida, Gulf of Mexico, North Carolina. Characteristics: Vase shaped. Reddish brown externally, tan internally. Oscules (1-5 mm wide) on the inner side. Surface conulose (1-5 mm high, 2-9 m apart). Compressible in consistency, tough to cut.