Resumen de Shiver me tendrils
Here, Wu presents Peter Parks' photograph of a siphonophore. Apart from its wondrously alien look, the coolest thing about the Portuguese man-of-war is that it is not an individual animal at all. Nor is it a jellyfish. A siphonophore is an entity formed of a colony of tiny animals called zooids. These creatures are so closely integrated with one another that they can't survive on their own. Their tentacles can trail up to 50 m below the surface, making it one of the longest "animals" on Earth. These tendrils carry venom that can kill small animals. Although desperately painful for humans, the sting doesn't usually kill them.
