A man floats in the Pacific Ocean off Agua Dulce beach in Lima, Peru, Thursday, February 23, 2017. Residents living in the capital city cool off on hot summer days by going to the nearby beaches. (Photo by Rodrigo Abd/AP Photo)
Michele Maccabelli at Lofoten Skimo on March 18, 2017 in Svolvar, Norway. The Arctic Triple – Lofoten Skimo is the first of three races. The others are Lofoten Ultra-Trail and Lofoten Triathlon. (Photo by Kai-Otto Melau/Getty Images)
A file picture taken on January 7, 2010 shows an armed Somali pirate along the coastline while the Greek cargo ship, MV Filitsa, is seen anchored just off the shores of Hobyo town in northeastern Somalia where its being held by pirates. Attacks on the world's seas are soaring as armed and dangerous pirates become increasingly emboldened, seizing more ships than before and taking even bigger risks, an international body said on July 14, 2011. (Photo by Mohamed Dahir/AFP Photo)
Philippine Environment department staff ride on a raft as they inspect Tinuy-an Waterfalls in Bislig, Surigao del Sur in southern Philippines February 15, 2017. (Photo by Erik De Castro/Reuters)
An Emirati man walks with his camels across the Hameem desert, some 170 kilometres west of the Gulf Emirate of Abu Dhabi, on February 24, 2017. (Photo by Karim Sahib/AFP Photo)
Vietnam’s Son Doong cave, the largest in the world, could hold a 40-story skyscraper inside. The pristine ecosystem has its own river and jungle. Despite its size, Son Doong wasn’t discovered until 1991. It was lost again for nearly two decades and was fully explored for the first time in 2009. (Photo by Jason Speth/HuffPost)
