We discovered the Parana Delta on a family holiday in 2005. We took a zodiac from Tigre and motored down the River Urión; we quietly paddled down the tributary of the Arroyo Malvinas, where we stopped and tied the boat to an old willow tree.  We swam in the warm river water and picnicked under the shade of the overhanging trees.  Everything around us was green, and the sound of the water splashing, the birds singing, and the trees rustling made us feel we were a world away from the bustle and stresses of…