"Their great wings glowing in the empty darkness of space, soaking up solar radiation. Perhaps with pusher-creatures attached to their bellies like remoras. Or perhaps the pushers ride in their enormous mouths like cleaner wrasses. (The Hrull are filter feeders despite their menacing look.) Although the Hrull who visit Earth are only thirty feet across, maybe the big freighter Hrull are a hundred meters across. The littler guys who came here are scouts..."
http://www.rudyrucker.com/blog/2007/05/14/411/
