Hello All, In the last week, I've spotted about a dozen of these creatures in my refugium. They come in various sizes, from a few millimeters to a couple inches, and seem to be spreading. In the last day, I spotted one in the display, but it seems to have problems navigating in heavy current. It hangs on to the glass by the "feathers", and moves around using those so-called feathers. The body is simply dangling in the current. When groups of them are close together, they ...