An ice swimming enthusiast dressed as Neptune takes to the frigid waters of Orankesee lake during the 27th annual "Winter Swimming in Berlin" on January 8, 2011 in Berlin, Germany. A local swimmers' group called the “Berlin Seals” invite ice swimmers from across Germany and abroad to the annual event. Members claim ice swimming is good for the body's blood circulation. (Photo by Sean Gallup)

Iraqi teenagers swim in waste water from the nearby Tuweitha nuclear facility near Baghdad, Iraq on May 28, 2003. Iraqis are consuming contaminated water unaware of the dangerous pollutants that can cause severe ill health. (Photo by Damir Sagolj/Reuters)

A female swimmer reacts after finishing the competition in a pool carved from thick ice covering the Songhua River during the Harbin Ice Swimming Competition in the northern city of Harbin, Heilongjiang province, January 5, 2016. The swimming competition was held on the official launch day of the Harbin International Ice and Snow Sculpture Festival. (Photo by Aly Song/Reuters)

Photographs show an adventurer swimming with giant Manta Rays at night. In her latest daring adventure, Alison Teal set out in the middle of the night to free dive with Manta Rays off the coast of Hawaii. Using only hand held dive lights, Alison dove over 50 feet down being careful never to touch the mantas as they fed off the plankton in the light streams. Here: Photos taken by photographer Sarah Lee show the beautiful sight of Manta Rays at night, as they swim with America explorer, Alison Teal. (Photo by Sarah Lee/Caters News Agency)

Photographer, Baron DaParre takes a picture of young model Danette Vega below an effigy dressed as a Wall Street banker hanging from a telephone wire on October 28, 2011 in Miami, Florida. As protests inspired by the Occupy Wall Street protesters continue around the country an artist known as Above, created the installation which hangs above a mural that reads “Give a Wall St. banker enough rope and he will hang himself”. (Photo by Joe Raedle/Getty Images)

Marcos Trujillo cleans the engines of a boat made by Contender in preparation for tomorrow's opening day of the four day long Progressive Insurance Miami International Boat Show at the Miami Beach Convention Center on February 15, 2012 in Miami Beach, Florida. The boat show features more than 3,000 boats and 2,000 exhibitors from all over the globe. (Photo by Joe Raedle/Getty Images)

A competitor dressed up as Santa Claus jumps into the sea during the 102nd Barcelona Traditional Christmas Swimming Cup at the Old Harbour of Barcelona on December 25, 2011 in Barcelona, Spain. (Photo by David Ramos/Getty Images)

Swimmers in fancy dress splash as they participate in the New Year's Day Loony Dook swim at South Queensferry, Scotland January 1, 2015. (Photo by Russell Cheyne/Reuters)