Original: 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.
Simplified: In fact, a Portuguese Man O' War is not a single animal, but rather a siphonophore   a  colony of four kinds of very small, highly modified individuals, which are specialized polyps and medusoidsGrzimek, B., N. Schlager & D. Olendorf 2003.