Bathyphysa conifera, sometimes called the flying spaghetti monster, is a bathypelagic[4] species of siphonophore in the family Rhizophysidae.

[17] Zooids are multicellular units that develop from a single fertilized egg and combine to create functional colonies able to: reproduce, digest, float, and maintain body positioning.

[18] It has a cystonect body plan,[19] meaning it has a pneumatophore, or float, and siphosome, or line of polyps, but no nectosome, or propulsion medusae.

[18] It differs from members of the genus Rhizophysa by the presence of ptera, or side "wings", on the young gastrozooids, or feeding polyps.

[23] Siphonophores generally start life as a single-celled zygote, which divided and grows into a single polyp called a protozooid.

[15] A species of manefish in the genus Caristius associates apparently mutualistically with B. conifera, using it for shelter, stealing meals, and perhaps nibbling on its host as well, yet protecting it from amphipod parasites like Themisto.