Portuguese Man o' War (Physalia physalis)
The Portuguese man o' war is not a jellyfish but a colonial siphonophore. Discover its 50 m tentacles, powerful venom, and complex colonial anatomy.
October 2026
October 2025
Portuguese Man o' War: Not a Jellyfish
Portuguese man o' war is actually a colony of organisms, not a single animal. Expert guide to the floating siphonophore and its extremely dangerous stings.