Where does this come from, and can I check it?

Some species have no working mouthparts as adults. The figure is taken from Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a animals fact?

Yes. It sits on the Animals shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

An adult mayfly may live only a day

Some species have no working mouthparts as adults The insect spends months or years as a nymph in water, then emerges to fly, mate and die. Swarms appear together within a short window, which is the point. Anglers match the hatch because the timing is so precise. It sits in Mondo's animals collection, one of 200 facts that each trace back to the reference below.

Where this comes from

Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Nature & Animals trivia

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Greenland sharks live for centuriesRadiocarbon dating of eye tissue suggests ages beyond 270 years A clam can outlive a countryGrowth rings in the shell count the years, and one specimen ran to 507 Lake Baikal holds one fifth of Earth unfrozen fresh waterLocated in Siberia, Lake Baikal contains more water than all the North American Great Lakes combined.Lake Baikal is the deepest and oldest lake on EarthIt holds about 20 percent of the world's unfrozen surface fresh water Silkworms have been farmed for thousands of yearsThe moth no longer survives well in the wild and depends on people Honeybees communicate flower locations through dancingA waggle dance informs hive mates of the direction and distance to nectar.

Tags: insects, lifespan, freshwater

An adult mayfly may live only a day: the short answers

Where does this come from, and can I check it?: Some species have no working mouthparts as adults. The figure is taken from Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a animals fact?: Yes. It sits on the Animals shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.