Freshwater plants in rain water ponds in the middle of sand dunes, Lencois Maranhenses, Maranhao, Brazil, South America

underwater lencois maranhenses maranhao brazil rain ponds sand dunes pond dune fresh water freshwater split image shallow plants ripple ripples floating day outdoors nature natural world botany flowers roots surface surface level close up close ups water ponds south america lencois maranhenses national park national parks parque nacional dos lencois maranhenses horizontal