living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Cnidaria Hatschek, 1888 - cnidarians
           Class Hydrozoa Owen, 1843
             Order Chondrophora Gray, 1849 - chondrophorans see Suborder Capitata Kühn, 1913 () sensu stricto
               Family Velellidae Brandt, 1835
                 Genus Velella Lamarck, 1801
                   Velella velella (Linnaeus, 1758) - by-the-wind sailor