The Portuguese man-of-war is not a jellyfish, but is closely related ... that release venom when triggered to trap small marine life as prey," according to Texas A&M Galveston information.

The Portuguese Man-of-War Isn't a Jellyfish A jellyfish is a single organism ... which is how men-of-war kill their prey, typically small fish and plankton. The stings are painful to humans ...

which are primarily small fish and crustaceans. While it’s highly unlikely that you'll die of a man o’ war sting, it’s still really painful. Much like a jellyfish sting, it causes welts on ...

Jellyfish-like creatures, known as Portuguese man-of-wars ... the Portuguese man-of-war’s venom can be deadly to small fish and painful to humans, according to the National Oceanic and ...