A Sky Wolf is a creature, presumably native to the Raft Universe. They resemble large mouths, with a series of eyes surrounding its maw. The mouth has a collection of teeth, pointing into the creature.
Sky wolves typically prey on the plate creatures, and leave the whales alone.
Sky wolves are a legendary figure to the residents of the Belt, though there was no known sighting of one until Rees' encounter.
Sky wolves appear to have the necessary intelligence to utilize the Core of the Raft Nebula to reach the Bridge Nebula, and several are seen during the Bridge's trip through internebular space.