Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Great Barrier Reef' has mentioned 'Coastal plain' in the following places:
Occurrence Sentence Text Source
The land that formed the substrate of the current Great Barrier Reef was a coastal plain formed from the eroded sediments of the Great Dividing Range with some larger hills (most of which were themselves remnants of older reefs[27] or, in rare cases, volcanoes[25]:26).
As it rose, the corals could then grow higher on the newly submerged maritime margins of the hills of the coastal plain.
By around 13,000 years ago the sea level was only 60 metres (200xc2xa0ft) lower than the present day, and corals began to surround the hills of the coastal plain, which were, by then, continental islands.