After over thirty-five years, sensitivity to visual opportunity has become instinctive for me so when our open river boat in tropical Costa Rica slid past the jungle shores, I could hardly contain myself. Monkeys and sloths gawked from the tightly packed vegetation. Crocodiles and water birds went about their daily routines. Thatched houses stood stork-like on skinny legs along the edge of the smoothly flowing river. Everywhere I looked I saw opportunities for paintings.