Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Henderson Island' has mentioned 'Coral' in the following places:
Occurrence Sentence Text Source
Henderson is one of the last two raised coral atolls in the world whose ecosystems remain relatively unaffected by human contact.
Henderson Island is a raised coral atoll that, with Pitcairn, Ducie and Oeno islands, forms the Pitcairn Island Group.
This coral limestone island sits atop a conical (presumed volcanic) mound, rising from a depth of roughly 3,500 metres (11,500xc2xa0ft).
Henderson Island is a remote and uninhabited elevated coral atoll located in the eastern South Pacific.
This gem in the middle of the Pacific is one of the world's best remaining examples of an elevated coral atoll ecosystem.
With its vast numbers of breeding seabirds, the island is an outstanding example of a raised and forested oceanic coral atoll with its fundamental features intact.
Criterion (x): While isolated coral atolls are typically species-poor, all four of Hendersonxe2x80x99s land birds are endemic including the very distinct flightless Henderson Crake.