| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Hydrozoa |
| Order: | Siphonophora |
| Family: | Physaliidae |
| Genus: | Physalia |
| Species: | P. physalis |
The Portuguese Man O' War (Physalia physalis), also known as the bluebubble, bluebottle or the man-of-war, is commonly thought of as a jellyfish but is actually a siphonophore—a colony of specialised polyps and medusoids.[1]
A similar group of animals are the chondrophores.