This photo provided by Japan Society shows “Spiral Shore” by Shiga Lieko from an exhibit in New York marking the fifth anniversary of Japan's earthquake and tsunami. (Photo by Japan Society courtesy Museum of Fine Arts, Boston/Ota Yasusuke via AP Photo)





A man rides a horse along a beach in the seaside town of Zeebrugge, Belgium, February 24, 2016. (Photo by Francois Lenoir/Reuters)





A man goes to surf at the snowy beach of Flackstad, near Ramberg, in Lofoten archipelago, Arctic Circle, on March 12, 2016. (Photo by Olivier Morin/AFP Photo)





Peter Gash, owner and manager of the Lady Elliot Island Eco Resort in the Great Barrier Reef area, snorkels during an inspection of the reef's condition in an area called the “Coral Gardens” located at Lady Elliot Island, Australia, in this June 11, 2015 file photo. (Photo by David Gray/Reuters)





A bicyclist is seen in the early morning hour in Olching westward of Munich, Germany, February 26, 2016. (Photo by Michaela Rehle/Reuters)





Tourists walk near a shipwreck in the coastal village of Pegeia, Cyprus February 28, 2016. (Photo by Yiannis Kourtoglou/Reuters)





A worker walks past a pile of iron ore from Australia at a port in Tianjin municipality in this March 29, 2010 file photo. (Photo by Vincent Du/Reuters)





A man skis in Botrange, in the nature reserve of Les Fagnes, Belgium March 5, 2016. (Photo by Yves Herman/Reuters)





Tourists enjoy a view of Mount Bromo from Penanjakan, Probolinggo, East Java, Indonesia March 6, 2016 in this photo taken by Antara Foto. (Photo by Zabur Karuru/Reuters/Antara Foto)





Deutsche Post DHL postwoman Andrea Bunar punts to deliver post using a traditional boat in the Spreewald village of Lehede, Germany in this April 11, 2014 file photo. (Photo by Axel Schmidt/Reuters)





A woman sits next to an escarpment on the outskirts of Asmara, Eritrea, February 20, 2016. (Photo by Thomas Mukoya/Reuters)





A migrant boy walks through a field near a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 11, 2016. (Photo by Stoyan Nenov/Reuters)





People sit on rocks in Perros-Guirec, France, March 11, 2016. (Photo by Stephane Mahe/Reuters)





A cyclist rides past autumn-coloured ivy climbing the wall of a building in downtown Copenhagen, Denmark, in this file picture taken November 2, 2010. (Photo by Bob Strong/Reuters)





A woman rides down a public sledge course during a sunny winter's day at the Muottas Muragle mountain near the resort of St. Moritz, Switzerland March 18, 2016. (Photo by Arnd Wiegmann/Reuters)





A visitor takes photographs of Mount Bromo, an active volcano and popular tourist destination, in Probolinggo, East Java province, Indonesia April 3, 2016 in this photo taken by Antara Foto. (Photo by Zabur Karuru/Reuters/Antara Foto)





A lone man stands on the sea shore at tsunami-devastated Arahama, in the coastal district of Sendai, Miyagi Prefecture, northern Japan, 10 March 2016. (Photo by Kimimasa Mayama/EPA)





A woman strolls along an alley of plane trees in Frankfurt, Germany, March 16, 2016. (Photo by Michael Probst/AP Photo)





An Iraqi shepherd herds his sheep in the Kurdish town of Aqrah, 500 kilometres north of Baghdad, on March 21, 2016. (Photo by Safin Hamed/AFP Photo)





Storm clouds build prior to the arrival of a thunderstorm as Jeff Warren of Auburn, Maine, heads for shore on his paddleboard on Lower Range Pond Thursday, March 17, 2016, in Poland, Maine. (Photo by Robert F. Bukaty/AP Photo)





A man walks on the road between Nouahibou and Nouakchott, where three Spanish aid workers were abducted in Mauritania, December 3, 2009. (Photo by Rafael Marchante/Reuters)





A man walks into the water as waves crash onto the shore of the Mediterranean sea in Nice, France on February 28, 2016. (Photo by Valery Hache/AFP Photo)





A surfer stands by northern lights ( aurora borealis ) on the snow covered beach of Unstad, on Lofoten Island, Arctic Circle, on March 10, 2016. Surfers from all over the world comes to Lofoten island to surf in extrem conditions. Ocean temperature is 5-6 °C, air temperature around 0°C in spite of a weather very unstable. (Photo by Olivier Morin/AFP Photo)