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Beautiful but Dangerous

Beautiful but Dangerous

July 28, 2006

Physalia physalis, commonly known as the Portuguese man-of-war or bluebottle, lives in warm waters worldwide and is famous for its painful stinging tentacles up to 50 meters (165 feet) long. The gas-filled float and crest at top acts like a sail. (Photo by Laurence Madin, Woods Hole Oceanographic Institution)

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