Giant snail eats an earthworm July 9, 2017 Cosmos Curated content from the editorial staff at Cosmos Magazine. By Cosmos When the air itself becomes saturated and the temperature is just right, rare giants start to emerge. Armed with 6 thousand teeth to shred its prey, New Zealand’s Powelliphanta Snail is a voracious predator with revolting table manners. Originally published by Cosmos as Giant snail eats an earthworm