Mayfly nymph at Pennington Flash

Observation - Mayfly nymph at Pennington Flash - UK and Ireland. Description: I did a pond dip at Pennington Flash nature reserve and found one area with 'clean pond' invertebrates and one with 'low health' pond invertebrates.

I did a pond dip at Pennington Flash nature reserve and found one area with 'clean pond' invertebrates and one with 'low health' pond invertebrates.