Did you know that when an emerging mayfly pushes through the surface-film of water to hatch, it's demonstrating a physical feat equivalent to a human breaking through a kitchen table-top?
Having kids and teachers witness this feat - and exactly HOW they do it (along with the strange transformation from "dun" to "spinner") in any of our upwing riverflies are key experiences within "Mayfly in the Classroom" - now available in full-colour guidebook form.