Giant Feather DusterHow to Care for Giant Feather Duster written by Dave Burr Giant Feather Dusters come in a variety of colorations ranging from tan and white to purple and tan. Feather Dusters use their radioles, or "feathers" to filter plankton and small floating organisms from the water into their mouth located at the center of the crown. When disturbed, the Feather Duster can retract quickly into its tube for safety. If severely stressed it can discard its crown