Women practising tai chi in front of a pavilion on West Lake, Hangzhou, Zhejiang Province, China, Asia

Women practising tai chi in front of a pavilion on West Lake, Hangzhou, Zhejiang Province, China, Asia

Six different groups of native warriors, drummers, and dancers perform on Kwato Island, Papua New Guinea, Pacific

A Lion Dance practice in Peng Chau, Hong Kong, China

Starling murmuration at sunset with remains of the West Pier in the background, City of Brighton and Hove, East Sussex, England, United Kingdom

Six different groups of native warriors, drummers, and dancers perform on Kwato Island, Papua New Guinea, Pacific

Adult macaroni penguins (Eudyptes chrysolophus) plunging into the sea leaving their breeding colony at Elsehul on South Georgia, Southern Ocean, Polar Regions

Portrait of synchronized swimmers upside-down underwater

Aerial view of Caucasian synchronized swimmers

Caucasian synchronized swimmers splashing in swimming pool

Aerial view of Caucasian synchronized swimmers

Caucasian synchronized swimmers with arms raised

Athletes jumping on sports field

Spectators viewing bottle-nosed dolphins, Tursiops truncatus, USA, California, San Diego, SeaWorld

Bottlenose dolphin, Tursiops truncatus, USA, California, San Diego, SeaWorld

UPS Logo, United Parcel Service of America, with the slogan "Ihr Business, Synchronisiert", German for "your business, synchronized"

Fans, soccer

Dancers and acrobats at the Arirang Festival, the North Korean Grand Mass Gymnastics and Artistic Performance, Pyongyang, North Korea, Asia

Dancers and acrobats at the Arirang Festival, the North Korean Grand Mass Gymnastics and Artistic Performance, Pyongyang, North Korea, Asia

Dancers and acrobats at the Arirang Festival, the North Korean Grand Mass Gymnastics and Artistic Performance, Pyongyang, North Korea, Asia

Dancers and acrobats at the Arirang Festival, the North Korean Grand Mass Gymnastics and Artistic Performance, Pyongyang, North Korea, Asia

Dancers and acrobats at the Arirang Festival, the North Korean Grand Mass Gymnastics and Artistic Performance, Pyongyang, North Korea, Asia

Dancers and acrobats at the Arirang Festival, the North Korean Grand Mass Gymnastics and Artistic Performance, Pyongyang, North Korea, Asia

Dancers and acrobats at the Arirang Festival, the North Korean Grand Mass Gymnastics and Artistic Performance, Pyongyang, North Korea, Asia

Members of the Saugatuck Rowing Club in Westport, Connecticut show how they can coordinate their rowing efforts to drive their scull upriver on a sunny June morning. The coxswain seated in the stern of the boat helps the team time their oar strokes and gives them words of encouragement.

A Millennial couple walking along Lanikai Beach with Mokapu Point and the Moku Manu Islands in the background; Lanikai, Oahu, Hawaii, USA

A view from behind of a Millennial couple walking along Lanikai Beach with Mokapu Point in the background; Lanikai, Oahu, Hawaii, USA

Architectural detail of a building's facade, Beijing, China