Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Islands and Protected Areas of the Gulf of California' has mentioned 'Overfishing' in the following places:
Occurrence Sentence Text Source
However, the data vary wildly according to the species being studied, and the gulf's ability to recuperate after years of overfishing remains uncertain.
Water pollution is a problem in the gulf, but the more immediate concerns are overfishing and bottom trawling, which destroys eelgrass beds and shellfish.