 That year, a 446-foot-long (136 metres) inflatable great white shark named Chompie was hung from the Discovery Channel's Silver Spring, Maryland headquarters.In 2007, Discovery Channel celebrated "Shark Week's 20th Anniversary" hosted by Les Stroud, host of "Survivorman".The 20th anniversary included the launch of "Sharkrunners", a video game that uses GPS data from tagged sharks in the Pacific Ocean.