According to Baidu Encyclopedia:

The scientific name of "Mrs. Donghai" is mussel, which is called "mussel" in Zhoushan dialect. It is also known as sea red, red clam and shell vegetable. According to research, collecting wild mussels for human use and trade has a long history in Shengsi. How did the ancestors start collecting mussels on the Shengsi Islands? Although there is no clear historical data to cite, there is still a legend of "mussels and island monkeys" circulating in the local area, which confirms it from one aspect. The original conditions of growth and utilization of mussels in Shengsi.