Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Aldabra Atoll' has mentioned 'Reef' in the following places:
Occurrence Sentence Text Source
[22] The atoll is made of reef limestone of Pleistocene age (with irregular coral formations called "champignon",[23] made up of two layers of varying stages of crystallization [24]) and this extends over an average width of 2 kilometres (1.2xc2xa0mi) rising to a height of 8 metres (26xc2xa0ft) above sea level, and forming the rim line (low cliffs with "deep notches, preceded by jagged pinnacles") of the shallow central lagoon.
Blacktip reef sharks (Carcharhinus melanopterus)