Portuguese Man o' War - Wikipedia
Despite its outward appearance, the man-of-war is not a true jellyfish but asiphonophore, which differ from jellyfish in that they are not actually a single creature, but a colonial organism made up of many minute individuals called zooids.[1] Each of these zooids is highly-specialized and, although structurally similar to other solitary animals, are attached to each other and physiologically integrated to the extent that they are incapable of independent survival.
