![]() They look like jellyfish but are a colony of many individuals hanging from one floating bladder.But its big claim to fame is its sting that can kill marine prey and sometimes even humans. In fact, the Portuguese man o’ war gets its name from an 18th-century warship. ![]() It works both as a float and to guide the creature like a ship’s sail. Because it is full of air, this part floats at the water’s surface. The man o’war’s bladder is very colorful. Together, the zooids act as one individual. Each of these smaller units, called zooids, are identical but serve their own specialized functions. It is a colony organism made up of many smaller units that hang as tentacles from a gas-filled bladder. Despite its jelly appearance, the sea creature is a siphonophore. The Portuguese man o’ war is not a jellyfish as most people think. ![]()
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