Overhead there was a black chimney going up through the rock, and the cool draft came from there with almost hurricane force, much of which was dissipated in the main river tunnel. Harker judged there was a cliff formation on the surface that siphoned the wind downward. The chimney was completely inaccessible. Harker said, "I'll guess we'll have to go upstream, along the side." The rock was eroded enough to make that possible, showing wide ledges at different levels. McLaren said, "What if this river doesn't come from the surface? What if it starts from an underground source?" "You stuck your neck out," Harker said. "Come on." They started. After a while, tumbling like porpoises in the black water, the golden creatures swam by, and saw the men, and stopped, and swam back again. They were not very large, the largest about the size of a twelve-year-old child. Their bodies were anthropoid, but adapted to swimming with shimmering webs. They glowed with a golden light, phosphorescent like the lichen, and their eyes were lidless and black, like one huge spreading pupil. Their faces were incredible. Harker could remember, faintly, the golden dandelions that grew on the lawn in summer. The heads and faces of the swimmers were like that, covered with streaming petals that seemed to have independent movements, as though they were sensory organs as well as decoration. Harker said, "For cripesake, what are they?" "They look like flowers," McLaren said. "They look more like fish," the black man said. Harker laughed. "I'll bet they're both. I'll bet they're plannies that grew where they had to be amphibious." The colonists had shortened plant-animal to planimal, and then just planny. "I've seen gimmicks in the swamps that weren't so far away from these. But jeez, get the eyes on 'em! They look human." "The shape's human, too, almost." McLaren shivered. "I wish they wouldn't look at us that way." Sim said, "As long as they just look. I'm not gonna worry...." They didn't. They started to close in below the men, swimming effortlessly against the current. Some of them began to clamber out on the low ledge behind them. They were agile and graceful. There was something unpleasantly child-like about them. There were fifteen or twenty of them, and they reminded Harker of a gang of mischievous kids--only the mischief had a queer soulless quality of malevolence. Harker led the way faster along the ledge. His knife was drawn and he carried a short spear in his right hand. The tone of the river changed. The channel broadened, and up ahead Harker saw that the cavern ended in a vast shadowy place, the water spreading into a dark lake, spilling slowly out over a low wide lip of rock. More of the shining child-things were playing there. They joined their fellows, closing the ring tighter around the three men. "I don't like this," McLaren said. "If they'd only make a noise!"