In fact, a Portuguese Man O' War is not a single animal, but rather a siphonophore a colony of four kinds of minute, highly modified individuals, which are specialized polyps and medusoids[1]. Each such zooid in these pelagic colonial hydroids or hydrozoans has a high degree of specialization and, although structurally similar to other solitary animals, are all attached to each other and physiologically integrated rather than living independently. Such zooids are specialised to such an extent that they lack the structures associated with other functions and are therefore dependent for survival on the others to do what the particular zooid cannot do.