Portuguese man-of-war is a venomous marine creature known for its long tentacles and float. It's commonly called a "floating terror" due to its painful sting that can even be lethal. Although this creature has a unique name, it's often referred to by different synonyms. Some synonyms for the Portuguese man-of-war are bluebottle, Pacific man-of-war, and Portuguese jellyfish. Another common name for this creature is the Atlantic Portuguese man-of-war as it's often found in the Atlantic Ocean. Regardless of the name used to refer to this creature, it's crucial to avoid contact with it to prevent a painful and dangerous sting.