Why they're awesome: The largest animal on Earth is thought to be the blue whale, but these strange sea creatures can grow ...

Not only is it not a jellyfish, it's not even an "it," but a "they." The Portuguese man-of-war is a siphonophore, an animal made up of a colony of organisms working together. The man-of-war ...

Although it appears to be a single entity, a siphonophore is actually a colony of tiny, genetically identical clones that have strung themselves together to work as a team. Marine biologist Stefan ...

Siphonophores are complex polymorphic pelagic gelatinous cnidarians, sometimes known as ‘string jellies’. At present the group comprises about 170 species. Habitat and life cycle Siphonophores are ...