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How Was The Gbr Formed. Web the great barrier reef (gbr) is considered the youngest reef system in the world with its earliest beginning around 600,000 years.
Web the great barrier reef (gbr) is considered the youngest reef system in the world with its earliest beginning around 600,000 years.
Web the great barrier reef (gbr) is considered the youngest reef system in the world with its earliest beginning around 600,000 years. Web the great barrier reef (gbr) is considered the youngest reef system in the world with its earliest beginning around 600,000 years.
