Jellyfish vs. Man O’ War: Key Differences

Although they are sometimes confused, the jellyfish and the Portuguese man o’ war are two different ocean creatures.

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It may not seem important to know what makes them unique, but you never know when it can come in handy, especially if you are planning a visit to the beach soon!

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Jellyfish vs. Man O’ War: Size

In size, jellyfish can range from one millimeter to 16 inches. Portuguese man o’ war’s feeding tentacles can measure up to 160 feet (50 meters) in length.

Jellyfish vs. Man O’ War: Colors

In terms of color, jellyfish can come in a wide range of hues from yellow to deep blue to vivid purple to pale lilac to bright orange to deep red. The blue, violet, or pink float of the man o’ war resembles a Portuguese naval ship under full sail from the 18th century, hence the name.

Jellyfish vs. Man O’ War: Physical Features

Having a smooth body with small tentacles, jellyfish can sting other organisms. They lack bones, brains, hearts, and eyes. The Portuguese man o’ war is a siphonophore, a group of specialized animals called zooids that act together.


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