National Geographic : 1971 Apr
Galaxies that fly, crawl, and swim " IKE SEEING HEAVEN both above and below," L observed Dr. Paul A. Zahl when he first viewed the pool-reflected Milky Way of glow worms in New Zealand's hushed Waitomo Caves (right). Myriad luminous fly larvae cling to the ceiling, dangling sticky threads from their tubular transparent homes (life-size, above). Flying insects, attracted by the lights, are caught-to be drawn up and devoured. But if visitors make a noise, the worms quickly dim or extinguish their glow. Pursuing nature's night lights, Senior Sci entist Zahl focused his cameras on fireflies in Malaysia that blinked in unison, and on lumi nescent bacteria in Baltimore, Maryland (lower right). In Japan he found dazzling squids, and crustaceans that, during World War II, served Japanese soldiers as flashlights. Results of his research will come to you in the July NATIONAL GEOGRAPHIC. Your friends can share such educational adventures; nomi nate them for membership on the form below.