https://ceb.wikipedia.org/wiki/Stephanocyathus
Stephanocyathus - Wikipedia
wikipedia
https://eunis.eea.europa.eu/species/439315
Stephanocyathus (Odontocyathus) campaniformis - (Marenzeller, 1904)
Stephanocyathus (Odontocyathus) campaniformis belongs to the Invertebrates group