Physonectae
Physonectae is a suborder of Siphonophores. In Japanese it is called 胞泳.
Like all siphonophores, members of Physonectae are composed of a colony of zooids. Physonect species typically have a at the top, with a nectosome region beneath it. The nectosome has many nectophores, or swimming bells, that propel the colony in any direction. The only exception are species in the genus Athorybia, which lack nectophores, resembling members of Cystonectae. Past the nectosome is the siphosome, which contains hydrophyllia, gastrozooids, gonophores, and palpons. These structures in the siphosome repeat in a pattern which is different for each species. Each loop on the pattern is called a cormidium.
