Related how?

Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Coelenterata
Cnidaria (Cnidarians)

Anthozoa (28524)

Children (7 direct children, 15582 direct and indirect children):

Hexacorallia (tree size 10078)

Octocorallia (tree size 5493)
Alcyonaria

Nemiana (tree size 1)

Ceriantipatharia

Relicanthidae (tree size 2)

Aiptasiodes (tree size 1)

Zoanthidea