The Biggest Loser is a reality television show which started in the U.S. in 2004. The show centers on overweight contestants attempting to lose the most weight and to fight for a cash prize. There are different variations of The Biggest Loser around the world. Each country has made its own adaptation to the show; however, the contestants always have the same goal: to lose the highest percentage of weight (or most weight) to become the Biggest Loser.
A similar programme, Operation: Transformation, airs on Irish television on RTE One, however it does not have a competitive format.
The largest organisms found on Earth can be determined according to various aspects of organism size, such as: mass, volume, area, length, height, or even genome size. Some organisms group together to form a superorganism, but such are not classed as single large organisms. The Great Barrier Reef is the world's largest structure composed of living entities, stretching 2,000 km, but contains many organisms of many species. The organism sizes listed are frequently considered "outsized" and are not in the normal size range for the respective species.