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Sticker of Common water boatman
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Common water boatman

Corixa punctata
Eats: PlantsTrue bugs and cicadasPonds, rivers and shores6 legs

The common water boatman is a little green bug that rows through the water like a tiny boat. Its long back legs are covered in fine hairs and work just like oars. It can swim, and it can fly too, so it can move from pond to pond.

Lives in
Europe, in ponds, lakes and other fresh water, even swimming pools
Length
0.5 to 1.5 cm (0.2 to 0.59 in)
Top speed
about 2 km/h (1.2 mph)
Swimming, estimate
Can it hurt you?
Harmless
Harmless. It is a peaceful plant eater.
What does it eat?
It eats algae and bits of dead plants in the water.
For real!Photo of Common water boatman
Picture by Piet Spaans. CC BY-SA 2.5, via Wikimedia Commons.

How big is it?

How long is it?

Common water boatman about 1.5 cm long (0.59 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 2.5 grains of rice in a rowcould swim the length of a bathtub in 3.6 secondsmoves 37 times its own body length every second

How big is Common water boatman compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It carries its own air supply: a bubble of air trapped under its wing cases by tiny hairs.

2

It uses that air bubble to help it hear sounds that travel through the water.

3

It swims on its front, unlike the backswimmer, which swims upside down.

4

It can fly, which helps it find new ponds.

you asked

Most asked questions about Common water boatman

?Does the water boatman bite?

No. It is a gentle plant eater and harmless to people.

?What does the water boatman eat?

Algae and pieces of dead plants in the water.

?How does a water boatman breathe underwater?

It traps a bubble of air under its wing cases and breathes from that.

For bug experts

Scientific name
Corixa punctata
Named by
Illiger
Group
True bugs and cicadas
Family
Corixidae
Classification
Insecta > Hemiptera > Corixidae
Lives on
Europe
Also known as
Lesser water boatman, Lesser waterboatman

Where the facts come from

  1. Lesser water boatman (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 Piet Spaans. CC BY-SA 2.5, 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: True bugs and cicadas

Also at home here: Ponds, rivers and shores