Robuta

https://www2.habitas.org.uk/marbiop-ni/species.php?item=C2610 MBDP-NI: Polymastia penicillus- Species account polymastia penicillus mbdp species account https://marinespecies.org/porifera/porifera.php?p=taxdetails&id=170646 World Porifera Database - Species - Polymastia mammillaris rara Koltun, 1966 world porifera database species polymastia