We were lucky to be in the park tonight when the mayflies belatedly made an appearance. Even luckier we had one of the children's 50 things bug kits in the car! So the children tried to humanely catch some mayflies:
Once safely caught in the catcher it was a chance to look at their unusual shape:
They found catching them easy enough to have 2 in the viewing pot:
Then they let them go again as they only live for such a short while.