So extensive, it is visible from space, the Great Barrier Reef is the world's largest coral reef ecosystem. Stretching 2,300 km along Australia’s northeast coastline, this complex of shallow water reefs and islands is home to thousands of species of fish, invertebrates, algae, reptiles, birds, and algae. This image, taken by the VIIRS sensor on the Suomi NPP satellite on August 19, 2017 uses the high resolution SVI 3, 2, and 1 bands, commonly referred to as “natural color” RGB.