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Calycophorae is a
Calycophorae is a suborder
Order () is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized ...
of Siphonophores
Siphonophorae (from Ancient Greek σίφων (siphōn), meaning "tube" and -φόρος (-phóros), meaning "bearing") is an Order (biology), order within Hydrozoa, a class of marine organisms within the phylum Cnidaria. According to the World Re ...
alongside two other suborders Physonectae
Physonectae is a suborder of siphonophores.
Organisms in the suborder Physonectae follow the classic Siphonophorae, Siphonophore body plan. They are almost all pelagic, and are composed of a colony of specialized zooids that originate from the ...
and Cystonectae
Cystonectae is a suborder of siphonophores.Schuchert, P. (2019). World Hydrozoa Database. Cystonectae. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=135334 on 2019-03-11 It include ...
. This suborder includes the giant siphonophore, (''Praya dubia
''Praya dubia'', the giant siphonophore, lives in the mesopelagic zone to bathypelagic zone at to below sea level. It has been found off the coasts around the world, from Iceland in the North Atlantic to Chile in the South Pacific.
''Praya dub ...
''); one of the longest lengthwise extant creatures (40–50m). While the Physonectae have a pneumatophore
Aerial roots are roots growing above the ground. They are often adventitious, i.e. formed from nonroot tissue. They are found in diverse plant species, including epiphytes such as orchids (''Orchidaceae''), tropical coastal swamp trees such ...
(a float), nectophore
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