Swimming mayfly nymph?

Swimming mayfly nymph?

Observation - Swimming mayfly nymph? - UK and Ireland. Description: Observed near Bingley Island, Canterbury, in the Stour. I think this may be a mayfly nymph as it has three thin tails, a segment body with three limbs, and it looks like plate-like gills though I am not sure and unsure of any more detail. Could anyone hel

Observed near Bingley Island, Canterbury, in the Stour. I think this may be a mayfly nymph as it has three thin tails, a segment body with three limbs, and it looks like plate-like gills though I am not sure and unsure of any more detail. Could anyone help please?