Robuta

https://marinespecies.org/porifera/porifera.php/www.aqua-aquapress.com/porifera.php?p=taxdetails&id=168851

https://marinespecies.org/porifera/porifera.php/www.aqua-aquapress.com/porifera.php?p=taxdetails&id=863371

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

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