Life … Animals Ringed Worms Clitellates Tubificida Naidid Worms Naidinae Nais genus Nais Nais Field notes Children Aquatic Oligochaete Worm Aquatic Oligochaete Worm Aquatic Oligochaete Worm Aquatic Oligochaete Worm Aquatic Oligochaete Worm Aquatic Oligochaete Worm Close