Summary ²

The Atlantic Portuguese man o' war (Physalia physalis), also known as the man-of-war, 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 deliver a painful sting, which on extremely rare occasions has been fatal to humans. Despite its outward appearance, the Portuguese man o' war is not a jellyfish but a siphonophore, which, unlike jellyfish, is not a...

Sources and Credits

1. (c) Bernd Kirschner, some rights reserved (CC BY-NC-SA), http://www.flickr.com/photos/40804746@N02/3863570577
2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Physalia_physalis

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