ok, not really but this video sure reminds me of them.
“Most mayflies lay their eggs immediately after mating; the eggs then take anywhere from 10 days to many months to hatch. Cloeon cognatum is an exception. This species is ovoviviparous, which means that a mated female holds her eggs internally until embryonic development is complete (about 18 days), after which she lays them in water and they hatch immediately. This female was dropped onto the water surface moments before the video started.”
Video credit: David H. Funk
the magic starts to happen after a minute. enjoy !
should you not remember Sea Monkeys, you can find out about them here.