“These incredible pictures capture the stunning moment waves roll on to a tropical beach. Photographers Nick Selway, 28, and pal CJ Kale, 35, position themselves in the magnificent Hawaiian water – and then wait for the waves to crash into their heads. Their only equipment are standard cameras – but a waterproof case means they do not need to sacrifice their cameras for their art”. (Photo by Nick Selway/CJ Kale)

Water gushes out from the Xiaolangdi Reservoir on the Yellow River during a sand-washing operation on June 20, 2012 in Luoyang, China. The sand-washing operation, which started on June 19 and will last for about 20 days, is conducted to clear out the silt deposits at the dam. (Photo by China Foto Press)

Thai residents party after sunset in the water on a flooded street along the swollen Yom river August 24, 2011 Phinchit, Thailand. The death toll has climbed to over 37 as 13 provinces remain flooded with 1.5 million affected. In Phinchit 110,000 people's homes have been flooded by nearby overflowing rivers. (Photo by Paula Bronstein /Getty Images)

A little blue penguin which was found at Papamoa Beach, covered in oil after the Liberian cargo ship, Rena, hit a reef, on October 7, 2011, in Tauranga, New Zealand. Reports of an oil sheen have been spotted on the surface of the water surrounding the ship and two penguins have been found covered in oil. (Photo by SUNLIVE New Zealand/Getty Images)

“For centuries, the Moken sea nomads have traveled the islands between Thailand and Myanmar fishing and foraging for food on the sea floor. Throughout the Mergui Archipelago, Moken migrate in flotillas of Kabangs (traditional boat of the Moken people), stopping at different islands and beaches. Expert freedivers, the Moken have adapted physically to an aquatic life, developing unique characteristics that let them see better and hold their breath longer while underwater”. – Taylor Weidman. Photo: Hook, an indigenous Moken man, holds a three-pronged throwing spear and searches for fish in the waters of Ko Surin National Park. March 1, 2013 – Ko Surin, Thailand. (Photo by Taylor Weidman/zReportage via ZUMA Press)

An enormous crocodile mauls a young hippo calf carcass near Lower Sabie on May 11, 2014, in Kruger National Park, South Africa. An enormous crocodile tosses around a young hippo calf caught in its lethal jaws. The giant reared out of the water revealing a young hippo calf between its teeth. The huge beast then span, jumped and splashed in the water with the small carcass. Amateur photographer Roland Ross captured these incredible photographs near Lower Sabie in Kruger Park, South Africa. (Photo by Roland Ross/Barcroft Media)

This breathtaking natural light show illuminating waters off the British coast looks like something out of hit film “Close Encounters of the Third Kind”. Photographer Adrian Campfield was out having dinner at a restaurant at Beachy Head, East Sussex, when the rays suddenly appeared. The 59-year-old and his wife Louise rushed outside onto the 535ft high cliffs to watch the spectacle. Mr Campfield, a former graphic designer, from Bexley, Kent, said the light was “changing all the time” for more than 15 minutes. (Photo by Adrian Campfield/Solent/Visual Press Agency)