Siphonophorae (Siphonophores)

The Siphonophorae or Siphonophora, the siphonophores, are an order of the hydrozoans, a class of marine animals belonging to the phylum Cnidaria. According to the World Register of Marine Species, the order contains 188 species. Although a siphonophore may appear to be a single organism, each specimen is in fact a colonial organism composed of small individual animals called zooids that have their own special function for survival. Most colonies are long, thin, transparent pelagicfloaters. Some siphonophores superficially resemble jellyfish, such as the venomous Portuguese man o' war and the Indo-Pacific man o' war.
Another species of siphonophore, Praya dubia, is one of the longest animals in the world, with a body length of 40–50 m (130–160 ft). The term originates from the Greek siphōn "tube" + pherein "to bear".
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== Families ==
* Physaliidae