Top-down view of an Indo-Pacific Portuguese Man-of-War (Physalia physalis). This is one of many thousands that were part of a mass stranding in South Africa. Such strandings happen from time to time, bringing these colonial siphonophores to shore, along with other associated animals such as Velella velella, Janthina janthina, and Planes minutus from the rarely seen open-ocean, blue-water community of life. The beautiful blue and green skirt surrounding the air pocket (pneumatophore) are loaded with nematocysts, which deliver potent venom
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