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Sticker of Great pond snail
Bug card No. 0657 of 1,500

Great pond snail

Lymnaea stagnalis
Eats: A bit of everythingSnails, slugs and wormsPonds, rivers and shoresNo legsNot an insect, but a bug cousin

The great pond snail is a big snail that lives in ponds and lakes. Its brown shell is tall and pointy, like a twisted ice cream cone. It lives underwater, but it breathes air, so it comes up to the surface to take a breath.

Fun fact: this one is not an insect at all, it has no legs! But kids find it on every bug hunt, so it lives in Bug Wiki too.
Lives in
Europe, Asia and North America, in ponds, lakes and slow rivers with lots of water plants
Length
2 to 3 cm (0.79 to 1.2 in)
the width of the shell
Top speed
about 0.03 km/h (0.02 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless. It is a slow, gentle snail.
What does it eat?
It mostly eats water plants, algae and soft leaves. It will also eat tiny water animals and the eggs of other snails.
For real!Photo of Great pond snail
Picture by unknown author. Public domain, via Wikimedia Commons.

How big is it?

How long is it?

Great pond snail about 3 cm long (1.2 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)
as long as 5 grains of rice in a rowneeds 2 minutes to cross a dinner table

How big is Great pond snail compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

Its shell is usually 4.5 to 6 centimetres tall, and a few grow to 7 centimetres.

2

Each snail is both a mum and a dad at the same time.

3

Scientists study its brain to learn how memory works, because its nerve cells are big and easy to see.

4

It lives as far north as northern Norway and high up in the mountains.

5

People can keep it in an aquarium and feed it salad, cucumber and dandelion leaves.

you asked

Most asked questions about Great pond snail

?What does the great pond snail eat?

Mostly water plants, algae and soft leaves, but also tiny water animals and snail eggs.

?How big is the great pond snail?

Its shell is about 4.5 to 6 centimetres tall and 2 to 3 centimetres wide.

?Can you keep a great pond snail as a pet?

Yes. It lives happily in a freshwater aquarium at room temperature.

For bug experts

Scientific name
Lymnaea stagnalis
Named by
Linnaeus, 1758
Group
Snails, slugs and worms
Family
Lymnaeidae
Classification
Gastropoda > Hygrophila > Lymnaeidae
Lives on
Europe, Asia, North America

Where the facts come from

  1. Lymnaea stagnalis (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
  2. Picture by unknown author. Public domain, Wikimedia Commons. The round sticker of this bug is cut from the same picture.

If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at hello@bugwiki.app and we will fix it.

More from the same group: Snails, slugs and worms

Also at home here: Ponds, rivers and shores