FTP name this order of insects.
As aquatic nymphs or naiads, they live from a few months to three year. At maturity they float to the surface, shed their skin, and transform into a flying dull-colored subimago. After a day or more, the subimago skin is shed and the shiny, sexually mature imago or spinner emerges, eager to mate in a nuptial swarming of millions. Its scientific name is Ephemeroptera, and some adult species are truly ephemeral, living only a few hours. FTP name this order of insects.
As aquatic nymphs or naiads, they live from a few months to three year.
{mayfly}