Habitat: Small colonies aggregate on calcareous algae (Thalassia sp.). Characteristics: Brown and can be covered by spicules, depending on exposure to the sun, which suggests the presence of symbiotic algae. Characterized by a non-pigmented zooid with a very long oral siphon bordered by six lobes, a branchial sac with anterior and posterior non-perforated areas, a short muscular process on the esophageal peduncle and a testis with one large follicle partially surrounded by a coiling sperm duct.