Mayfly Hatch Video
Mayflies are shortlived. The adults may live from 30 minutes up to one day (depending on the species). Adults are around only to reproduce. They don't even have moutparts and their digestive systems are filled with air.
Immature mayflies are nymphs. They live underwater and can usually be found if you turn over rocks in lakes and ponds (but be sure to turn them back over again). Adult mayflies and the nymphs are important parts of the food web. In many fly fishing circles, mayfly "lures" are used to catch fish.
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