Tunick was born in Middletown, New York, USA. He earned a Bachelor of Arts from Emerson College in 1988. He is best known for his installations that feature large numbers of nude people posed in artistic formations. In these images the nude form becomes abstract due to the sheer number so closely placed together. Known as installations, they are often situated in urban locations throughout the world. He also has done some "Beyond The City" woodland and beach installations and still does individuals and small groups occasionally.
In 1992, Tunick started out documenting live nudes in public locations in New York through video and photographs. His early works from this period focus more on a single nude individual to small groups of nudes. These works are much more intimate images than the massive installations for which he's now known. His photos quickly became popular and he spread out to other states in America. By 1994 Tunick had organized and photographed over 65 temporary site related installations in the United States and abroad. Since then, he has taken his celebration of the nude form international, and has taken photos in cities that include Bruges, Buenos Aires, Buffalo, Lisbon, London, Lyon, Melbourne, Montreal, Rome, San SebastiŠn, S„o Paulo, Caracas, Newcastle/Gateshead, Vienna, DŁsseldorf, Helsinki, Santiago, Mexico City and Amsterdam. In August of 1997, Tunick photographed a large group of nudes at The Great Went, a festival hosted by Phish in Limestone, Maine.