Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ha Long Bay' has mentioned 'Shellfish' in the following places:
Occurrence Sentence Text Source
There are remains from mounds of mountain shellfish (Cyclophorus), spring shellfish (Melania, also called Thiana), some fresh water mollusc and some rudimentary labour tools.
The main way of life of Soi Nhu's inhabitants included catching fish and shellfish, collecting fruits and digging for bulbs and roots.