Man-of-War The Portuguese man-of-war if a member of the Kingdom Animalia, phylum Cnidaria(1), class Hydrozoa, order Siphonophra, the genus Physalia, and the The man-of-war is not an actual jellyfish, but a Siphonophor. Also the man-of-war is not a single organism. It is made up of many different organisms that work together. These organisms are called polyps. The Portuguese man-of-war is usually found in the Northern Atlantic gulf stream. It can also be found in the tropical and subtropical regions of the Indian and Pacific Oceans. The man-of-war will usually travel in groups, that may contain up to one thousand members. The main portion of t