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.
You can spend a lifetime exploring the Great Barrier Reef and still not see all of this colorful coral realmâitâs nearly the size of Montana. Sprawling off the east coast of Queensland, Australia, the Great Barrier Reef is not a single reef but a group of more than 2,800 distinct entities.It stretches over 1,250 miles (2,000 kilometers) north to south and covers some 135,000 square miles (350,000 square kilometers) in total.prawling off the east coast of Queensland, Australia, the Great Barrier Reef is not a single reef but a group of more than 2,800 distinct entities.