Check out this video of giant Mayflies made by the BBC. This is amazing footage, and makes me long for summer and the Green Drake hatch. Drakes are the largest Mayflies that hatch (#10-12) in my home waters and the Mayflies in this video make Drakes look tiny. I’m not an entomologist but the Mayflies in the video look like Hexagenia or a near relative. Check it out, I think you’ll wish you had a rod in hand during the filming!