| Class | Order | Family | Genus species | Images | Notes | Author | Char |
|---|---|---|---|---|---|---|---|
| Demospongiae | Lithistida | Desmanthidae | Desmanthus incrustans | 2 | Thinly encrusting, dark orange, as a hard crust with hispid surface, owing respectively to its Lithisthid skeleton of basal desmas (articulated reticulation of silicon spicules) and erect protruding spicules (styles). Looks geen when deep underwater. | (Topsent, 1899) | green,orange,encrusting,hard |
