Leaf cutter effects, on Pondweed.

Leaf cutter effects, on Pondweed.

Observation - Leaf cutter effects, on Pondweed.. Description: Neatly cut holes in Potamegeton floating leaves. The rounded pieces are placed on (or under?) the leaf to form an attached 'tent' for protection. I have no clue what creature made these!

Neatly cut holes in Potamegeton floating leaves. The rounded pieces are placed on (or under?) the leaf to form an attached 'tent' for protection. I have no clue what creature made these!