* Pneumatophore: This is the most prominent part, the gas-filled bladder that floats on the surface and gives the creature its name. It's actually a modified polyp that allows the colony to stay buoyant and travel with the wind and currents. It's filled with nitrogen gas and has a crest that can be extended or retracted, acting as a sail.
* Dactylozooids: These are the tentacles, which can be incredibly long (up to 100 feet!). They are covered in stinging nematocysts, used to capture prey and defend the colony.
* Gastrozooids: These are the feeding polyps. They are responsible for digesting the prey captured by the dactylozooids.
* Gonozooids: These are the reproductive polyps. They are responsible for producing the male and female gametes necessary for the colony to reproduce.
* Nectophores: These are the polyps responsible for movement, but in the Portuguese man-of-war, they are absent.
It's important to remember that all parts of the Portuguese man-of-war are venomous, and even detached tentacles can still sting for days after the colony dies.