By Randy Strauss | Missouri River at Bellevue, Nebraska

By Yasir Ali Awan | Rawalpindi, Punjab, Pakistan

By Hassan Dadashi Arani | Esfahan province. Iran

By Mohamed Mohamed | Tripoli,Libya

By David Hawkes | Sheffield, UK

By Hassan Dadashi Arani | Esfahan province. Iran

By Deirdre Horan | Dublin, Ireland

By Abhijit Patil | Ah-Shi-Sle-Pah, New Mexico, USA

By Laurie Engelhardt | Hermosa Beach, CA

By Chuck Reinhart | Vincennes, Indiana

By Guido Santacana | San Juan, Puerto Rico

By Brent Barbero | Beaver Mines Alberta

By Patricio Leon | Santiago, Chile

By Isaias Gonzalo solís | playa de Torimbia, Llanes, Spain

By Matthew Sablan | Gardena, CA

By Andy Dungan | Near Cotopaxi, Colorado USA