A Sydney Aquarium diver uses a vacuum to clean the gravel in the Great Barrier Reef tank as a Ray Shark swims by September 26, 2006 in Sydney, Australia. The Aquarium is undergoing its annual spring clean to prepare for the school holidays using vacuums, along with sea creatures like Sea Cucumbers, Sea Urchins, Cleaner Wrasse Fish and Sea Stars to help complete the job. (Photo by Ian Waldie/Getty Images)

A member of the “Avocadoo” club performs a pole dance on a street sign pole in Lodz, central Poland on June 27, 2013. Talk about a traffic stopper: three pole dancers in central Poland have been honing their skills out in the streets, throwing their legs around signposts to the surprise and delight of many a passerby. (Photo by Janek Skarzynski/AFP Photo)

Hungarian pole dancing champion Zsofia Komenda performs during the rehearsal of her unique show on a suspended pole in Budapest's Grand Circus, Hungary, June 17, 2016. (Photo by Laszlo Balogh/Reuters)

Workers polish a snow sculpture ahead of the 16th Harbin Ice and Snow World in Harbin, Heilongjiang province, December 22, 2014. The 16th Harbin Ice and Snow World will be officially opened on January 5, 2015. (Photo by Reuters/Stringer)

One of the two one-year-old albino alligator is seen in a vivarium at the Tropical aquarium in Paris. The two alligators are the result of a captive breeding program which protect endangered species and will presented to the public in a vivarium. (Photo by Philippe Wojazer/Reuters)

Swimmers climb out of a pool carved into the thick ice covering the Songhua River during the Harbin Ice Swimming Competition in the northern city of Harbin, Heilongjiang province January 5, 2014. According to organisers, about 700 swimmers across China took part in the event on the official launch day of the Harbin Ice and Snow Sculpture Festival. (Photo by Kim Kyung-Hoon/Reuters)

A swimmer reacts after finishing his competition in a pool carved into thick ice covering the Songhua River during the Harbin Ice Swimming Competition in the northern city of Harbin, Heilongjiang province January 5, 2015. The swimming competition was held on the official launch day of the Harbin International Ice and Snow Sculpture Festival. (Photo by Kim Kyung-Hoon/Reuters)

Tourists play in the Harbin Ice And Snow World during its test run on December 22, 2015 in Harbin, Heilongjiang Province of China. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)