Marrus orthocanna is a species of pelagicsiphonophore, a colonial animal. It has zooids, some of which are polyps and some medusae. It lives in the Arctic and other cold, deep waters, swimming independently in mid-ocean.
A siphonophore is not a single animal. It is a colony of four kinds of zooids. Zooids are very small, highly modified individuals. All the zooids in a colony are genetically identical. These zooids are specialized polyps and medusoids.