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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.It is considered to be the same species as the Pacific man o' war or bluebottle, which is found mainly in the Pacific Ocean. [8]
The family Physaliidae is monotypic, consisting of only one genus, Physalia. [2] The genus is also monotypic, containing only P. physalis. [1] [3] There is a long history of the genus being described with multiple species, such as the Pacific man o' war (P. utriculus), however most of these species are now considered synonyms for P. physalis.
Portuguese man o' war (Physalia physalis) Organisms in the order of Siphonophorae have been classified into the phylum Cnidaria and the class Hydrozoa. [3] The phylogenetic relationships of siphonophores have been of great interest due to the high variability of the organization of their polyp colonies and medusae.
In this Feb. 20, 2003 file photo, Portuguese man-of-war were plentiful on Fort Lauderdale Beach. The long, dangling tentacles with powerful stinging cells are not visible as they are on the bottom ...
A man-o-war is washed up on Midtown Beach as high gusts blow in the from the east Monday morning. Those who experience a sting should remove the tentacle from their skin as quickly as possible, he ...
The highly apomorphic Siphonophorae—like this Portuguese man o' war (Physalia physalis)—have long misled hydrozoan researchers. The earliest hydrozoans may be from the Vendian (late Precambrian), more than 540 million years ago. [5] Hydrozoan systematics are highly complex. [6]
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This small cnidarian is part of a specialised ocean surface community that includes the better-known cnidarian siphonophore, the Portuguese man o' war. Specialized predatory gastropod molluscs prey on these cnidarians. Such predators include nudibranchs (sea slugs) in the genus Glaucus [4] and purple snails in the genus Janthina. [5]