Portuguese Man of War

Portuguese man-of-war
One kind of jellyfish found in the oceans is commonly called the Portuguese man-of-war. The scientific name for this species of jellyfish is Physalia physalis.
The Portuguese man-of-war is in the phylum Cnidaria. Species in this phylum have a tissue level of organization and two layers of cells form the body. The species also has radial symmetry, which is where related parts of the body are set and continual around a central axis. Cnidarians have and oral surface where the mouth is and aboral surface on the opposing side. The mouth is centrally positioned and opens into a gut. Tentacles border the mouth. The basic form in this phylum is medusa or upside-down polyp, which is customized for swimming.
Hydrozoa is the class that the Portuguese man-of-war belongs to. Hydrozoa include feathery or bushy colonies of small polyps. The polyps are made for feeding, defense and reproduction. They also have tiny see-through medusa that discharges gam...