What is a pretty jellyfish?

Portuguese man o' war (Physalia physalis) is a marine hydrozoan found in the Atlantic, Indian, and Pacific oceans. It is a colonial organism made up of a colony of four specialized zooids: a sail, a float, tentacles, and dactylozooids. The Portuguese man o' war is named after the Portuguese caravels of the 15th century, due to its sail-like crest. It is also known as the bluebottle, the floating terror, and the man-of-war.

Portuguese man o' wars are beautiful and delicate creatures, but they can also be dangerous. Their tentacles contain venom that can cause severe pain, nausea, vomiting, and even death in some cases. It is important to avoid contact with Portuguese man o' wars, and to seek medical attention if you are stung.