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Dieren en planten

Water en land

Great pond snail


up to 7 centimeters


dark gray-brown, sometimes with yellow spots


up to 2 years


omnivores: plants, algae, carrion, living snails and insects


parasites, ducks, fish


sexual and asexual (hermafrodite)

  • Dut: Gewone poelslak
  • Lat: Lymnaea stagnalis
  • Eng: Great pond snail, Stagnant pond snail
  • Ger: Spitzschlammschnecke
  • Fre: Lymnaea stagnalis
  • Dan: Stor Mosesnegl
Great pond snail, mating, foto fitis, sytske dijksen

Great pond snail

Great pond snails have lungs and need to surface regularly and take a breath. They eat just about anything they run into, even their own excrement. That sounds disgusting, but it means that they only waste 15% of what they eat. A pig wastes 6 times as much with its excrement! Pond snails are both male and female simultaneously and mate with another snail or with itself. The chains of eggs are attached to the underside of drifting leaves. After 10 days, the small snails hatch.

  • Distribution and habitat

    Great pond snails are common in the Netherlands and Belgium. They live in all sorts of freshwater regions with tranquil, such as ditches, ponds and lakes.