Is the Great Barrier Reef bigger than the Grand Canyon?

The Great Barrier Reef is far bigger than the Grand Canyon. It extends for around 2300 km in length, covers an area of about 300 000 sq km, while the coral reefs (not the ones with living polyps) reaches down to a depth of up to 500m.

The Grand Canyom, by comparison, is around 446 km long and up to 29 km wide, giving it an area of around 12 934 sq km. It is deeper, however, reaching a depth of up to 1.6 km.