Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Phong Nha-Ke Bang National Park' has mentioned 'Sea' in the following places:

Occurrence Sentence	Text Source
As many as seven different major levels of karst development have occurred as a result of tectonic uplift and changing sea levels, thus the karst landscape of PNKB is extremely complex with high geodiversity and many geomorphic features of considerable significance.	WIKI