siphonophore

Any of various transparent, often subtly colored marine hydrozoans of the order Siphonophora, consisting of a delicate floating or swimming colony of specialized zooids and including the Portuguese man-of-war.

Same as siphonophoran.

One of the Siphonophora.

Any of various transparent marine hydrozoans, of the order Siphonophora, that float or swim as colonies of polyps.

a floating or swimming oceanic colony of polyps often transparent or showily colored