Occurrence of Attributes in Original Text

The text related to the cultural heritage 'East Rennell' has mentioned 'Sea level' in the following places:
Occurrence Sentence Text Source
It is mostly clad in dense forest and in the centre of the south end of the island is Lake Tegano (also known as Te Nggano), which was at one time the atoll's lagoon; the surface of the lake is at sea level and the water is brackish.