Cephalodiscus dodecalophus
Kingdom: Animalia
Phylum: Hemichordata
Class: Pterobranchia
Order: Cephalodiscida
Description
Cephalodiscida is one of two orders in the class Pterobranchia, which are small, worm-shaped animals. Members belong to the hemichordates.[1][2] Species in this order are sessile, living in clear water and secrete tubes on the ocean floor
Reference
http://www.bie.ala.org.au/species/NZOR-4-75824
http://www.species-identification.org/species.php?species_group=zsao&id=4023