All Together Now

Raskoff/NOAA

Colonists we may have been at one point, but we are not colonial creatures. Ergo, we are not siphonophores, like, for example, coral or the Portuguese man-of-war. These simple little creatures are amazing mainly in that they are, each one, not one but many creatures surviving via the ultimate example of teamwork. And though each is a clone of the other, each has a specialization. Some steer the whole organism, others capture prey, still others digest. Still more amazingly, at least some of them change their role as they age (story, GIF): http://www.theatlantic.com/technology/archive/2015/09/living-jet-engines-colony-nanomia-siphonophore/403816/
   If you're intrigued enough to want to learn more about these organisms, like the fact that a recently found species is the first marine invertebrate we know of that generates red light, go to http://www.siphonophores.org/index.php