- Ephemeroptera Galactica
 - Information on mayflies (Ephemeroptera) for scientists and aquatic biologists. Maintained at Florida A&M University. - Replicators - Mayflies
- Features article, life cycle, puzzle, and pictures of the short-lived mayflies. From PBS online.
- Wikipedia: Mayfly
- User-generated article about the order Ephemeroptera, the group of insects with short-lived adulthood, which includes mayflies and dragonflies.
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