Dictionary entry overview: What does accretion mean? â¢ ACCRETION (noun) The noun ACCRETION has 6 senses: 1. an increase by natural growth or addition 2. something contributing to growth or increase 3. (astronomy) the formation of a celestial object by the effect of gravity pulling together surrounding objects and gases 4.
Great Barrier Reef. The 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 344,400 square kilometres (133,000 sq mi). The reef is located in the Coral Sea, off the coast of Queensland, Australia.
The Great Barrier Reef Marine Park is a marine protected area which includes almost all of the Great Barrier Reef. It encompasses an area of about 345,400 square kilometres, commencing at the tip of Cape York and extending along the Queensland coast to just north of Bundaberg.he Great Barrier Reef off Queenslandâs east coast is an international tourism icon. It is made up of about 2,900 unconnected coral reefs, stretching over 2,000 km from south of Papua New Guinea to Bundaberg. There are also about 900 islands within the Great Barrier Reef.