BlogHide Resteemsintrestingfacts (25)in intrestingfacts • 8 years agoAt over 2000 kilometers long, The Great Barrier Reef is the largest living structure on EarthThe Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres (1,400 mi) over an area of approximately…