Physalia is a genus of hydrozoan jellyfish. It is the only genus in the family Physaliidae. Just like most hydrozoans, the members of this genus are colonial...

The Portuguese man o' war (Physalia physalis) is a Cnidarian invertebrate. It lives in the sea. It is sometimes called the blue bubble, or man-of-war....

sexually, or by asexual reproduction (budding). The Portuguese Man o' War, Physalia physalis, is a large colonial marine jellyfish. It is composed of many...