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Physalia physalis

Physalia physalis
Photo Information
Copyright: Luciano Gollini (lousat) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6595 W: 89 N: 15659] (65489)
Genre: Animals
Medium: Color
Date Taken: 2016-11-20
Categories: Cnidarians
Camera: Sony Cybershot DSC HX200V
Exposure: f/3.2, 1/320 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2016-12-20 15:45
Viewed: 2111
Points: 10
[Note Guidelines] Photographer's Note
Phylum: Cnidaria
Class: Hydrozoa
Order: Siphonophora
Family: Physaliidae
Genus: Physalia
Species:P. physalis

The Atlantic Portuguese man o' war (Physalia physalis), also known as the man-of-war,blue bottle, or floating terror, is a marine hydrozoan of the family Physaliidae found in the Atlantic Ocean, as well as the Indian and Pacific Oceans. Its venomous tentacles can deliver a painful (and sometimes fatal) sting. Despite its outward appearance, the Portuguese man o' war is not a jellyfish but a siphonophore, which, unlike jellyfish, is not actually a single multicellular organism, but a colonial organism made up of specialized individual animals called zooids or polyps.These zooids are attached to one another and physiologically integrated to the extent that they are unable to survive independently, and therefore have to function as if they were a so-called individual animal.
The Indo-Pacific Portuguese man-of-war (P. utriculus), or blue bottle, is a related species with very similar appearance found throughout the Indian and Pacific Oceans.The Atlantic Portuguese man o' war lives at the surface of the ocean. The gas-filled bladder, or pneumatophore, remains at the surface, while the remainder is submerged. As the Portuguese man o' war has no means of propulsion, it moves according to the winds, currents, and tides. Although it is most commonly found in the open ocean in tropical and subtropical regions, it has been found as far north as the Bay of Fundy and the Hebrides.
Strong winds may drive them into bays or onto beaches. Often, finding a single Portuguese man o'war is followed by finding many others in the vicinity.They can sting while beached; the discovery of a man o' war washed up on a beach may lead to the closure of the beach.

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Critiques [Translate]

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2754 W: 282 N: 4931] (19883)
  • [2016-12-20 17:49]

Hello Luciano,
Great shot of this unusual looking specimen. I have never seen a Portuguese man-of-war, but have heard about them and their terrible stings. I never knew they were actually many organisms living together until I read your notes.
The low POV you chose gives us a great look at its unique features and beautiful colors. It actually reminds me of a blow up floating device that my younger grandchildren might use when they go swimming.
Excellent detail and perfect exposure.TFS!!

hallo Luciano
Great shot with very good details
i like this picture
the colours and sharpness and very good
thanks gr lou

Hi Luciano
Beautiful. I have never seen this species. The gas-filled bladder is sharp and the POV is good.

Thanks a for sharing.

Hello Luciano

Great macro of this marine creature, fine POV, beautiful light
shining it beautiful color tones, great DOF, focus, sharpness, details, TFS


Hi Luciano,
Not only beautiful, but very educational photo / note also as this species is not common on the pages of TrekNature (if ever occured at all). Great close-up with nice sharpness and lights, taken from a spectacular PoV. Your exposure control is awesome again, even if you didn't use flash now. :-) Exceptional image, thanks for sharing.
Kind regards from Ireland, László

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