National Geographic : 1952 Oct
Q National Geographic Society 468 Red Sea's Twilight Zone: A Battery of Sponges Stands at Attention, and a Freckle-faced Fish Guards His Coral Hide-out Crannied sea wall, 120 feet down, contains countless tunnels and escape routes for its gaily colored population. Divers found that thetiny beige and brown hawkfish believed he was invisible. Freezing beside his poisonous Millepora coral branch, he refused to move until touched. Thenhewhirled round inaclownish dance, only to settle beside another coral twig, stiff as a china fish in a child's aquarium.