These all appear to belong to the genus Cerianthus. We have seen references that call at least some of them C. cf ambonensis but it is not clear if all are indeed the same species. The World Register of Marine Species puts the species ambonensis in the genus Ceriantheomorphe, but since we are unsure of our ID, we are leaving it as Cerianthis cf for now.
Retracted into tube with Thor amboinensis shrimp.
Created 27 April 2025