Portuguese Man O War
Physalia physalis
The Portuguese man o' war (Physalia physalis), also known as the man-of-war[6] or bluebottle,[7] is a marine hydrozoan found in the Atlantic Ocean and the Indian Ocean.
The Portuguese man o' war is a conspicuous member of the neuston, the community of organisms that live at the surface of the ocean. It has numerous microscopic venomous cnidocytes which deliver a painful sting powerful enough to kill fish, and even, in some cases, humans. Although it superficially resembles a jellyfish, the Portuguese man o' war is in fact a siphonophore. Like all siphonophores, it is a colonial organism, made up of many smaller units called zooids
Like all siphonophores, P. physalis is a colonial organism: each animal is composed of many smaller units (zooids) that hang in clusters from under a large, gas-filled structure called the pneumatophore.[32]
Seven different types of zooids have been described in the man o' war, and these all depend on each other for survival and performing different functions, such as digestion (gastrozooids), reproduction (gonozooids) and hunting (dactylozooids). A fourth type of zooid is the pneumatophore.
https://en.wikipedia.org/wiki/Portuguese_man_o'_war
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