Robuta

https://marinespecies.org/porifera/porifera.php/porifera.php?p=taxdetails&id=169497

https://marinespecies.org/porifera/porifera.php/www.aqua-aquapress.com/porifera.php?p=taxdetails&id=169415

https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=133884

https://species.wikimedia.org/wiki/Myxilla_tornotata

https://marinespecies.org/porifera/porifera.php/porifera.php?p=taxdetails&id=192633

https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=192642

https://species.wikimedia.org/wiki/Myxilla_crucifera