The Portuguese Man O’ War is named for its air bladder, which looks similar to the sails of the Portuguese fighting ship (Man of war) Caravela redonda (an armed 4-sail caravel), of the 14th and 15th centuries. Photo source: ©© Martha Rivero
They look like a discarded balloon. They’re actually a bubble full of agony.
You’ll want the skinny on these dangerous beauties if you encounter one on your summer beach day…