Occurrence of Attributes in Original Text

The text related to the cultural heritage 'St Kilda' has mentioned 'Sea level' in the following places:
Occurrence Sentence Text Source
The archipelago represents the remnants of a long-extinct ring volcano rising from a seabed plateau approximately 40 metres (130xc2xa0ft) below sea level.
Gale-force winds occur less than 2 percent of the time in any one year, but gusts of 185 kilometres per hour (115xc2xa0mph) and more occur regularly on the high tops, and speeds of 209 kilometres per hour (130xc2xa0mph) have occasionally been recorded near sea level.
[164] Such is the power of the North Atlantic swell that the effects of the waves can be detected 70 metres (230xc2xa0ft) below sea level.