Before the 10,000 visitors per day, arrive at the Plitvicka National Park in Croatia; I arrive shortly after 7:15 am with about 45 people being there that early. There was a logged flexible boardwalk along the Unique Park's Green water where when a person walks by; it moves. I noticed this Needle Fern bopping along the water as the wind pushes up along in the opposite direction away from me as the water is channeling from a lake of higher elevation of water down to a lower level underneath the boardwalk to another lake.