The Portuguese man o' war (Physalia physalis) with its symbiotic fish, called "pastorcillo" in Spanish (Nomeus gronovii). The Portuguese man o' war is often mistaken for a jellyfish, but it is actually a siphonophore, that is an aggregation of specialized individuals of four different types, called zooids.


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Image ID: 0268376-VW-DSR

Portuguese man o' war with pastorcillo

The Portuguese man o' war (Physalia physalis) with its symbiotic fish, called "pastorcillo" in Spanish (Nomeus gronovii). The Portuguese man o' war is often mistaken for a jellyfish, but it is actually a siphonophore, that is an aggregation of specialized individuals of four different types, called zooids.
Credit to: BluePlanetArchive / VWPics / David Salvatori

Image dimensions: 7360x4912