Is the Portuguese man-of-war a jellyfish?
Is the Portuguese man-of-war a jellyfish? The Portuguese man o' war, (Physalia physalis) is often called a jellyfish, but is actually a species of siphonophore, a group of animals that are closely related to jellyfish.
What is the difference between a Portuguese man-of-war and true jellyfish?
The Portuguese man o' war is not a jellyfish, but rather a siphonophore, which is a colony of specialized animals called zooids that work together as one. 2. The Portuguese man o' war doesn't swim. Instead, it uses wind and ocean currents to propel it forward.