The Ribbon Reefs are long, thin strips of reef, which form the outer edges of the Great Barrier Reef around 50 km - 100 km off the northern Queensland shore and so are accessed only by Australian liveaboards. Characteristically no wider than 450m, they are part of the Great Barrier Reef Marine Park and are covered in colourful corals that attract a plethora of reef life big and small, with sandy gullies separating them, themselves containing interesting critters.