Cystonectae

Cystonectae is a suborder of siphonophores.^[2] It includes the Portuguese man o' war (Physalia physalis) and Bathyphysa conifera.

Cystonectae
Illustration of a Portuguese man o' war (Physalia physalis)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Cnidaria
Class:	Hydrozoa
Order:	Siphonophorae
Suborder:	Cystonectae Haeckel, 1887[1]
Families and genera[2]
Physaliidae Brandt, 1835 Physalia Lamarck, 1801 Rhizophysidae Brandt, 1835 Bathyphysa Studer, 1878 Epibulia Eschscholtz, 1829 (taxon inquirendum) Rhizophysa Péron & Lesueur, 1807

In Japanese, it is called 嚢泳^[3] (Nōei).

The typical cystonect body plan has a pneumatophore (float) and siphosome (line of polyps) but no nectosome (propulsion medusae).^[4]