The researchers studied the diversity of macrobenthic animals in the intertidal zones of Zhoushan Archipelago, China in summer. They collected samples from 14 sections on twelve islands and analyzed the species diversity using statistical methods. They found a total of 69 species, with Mollusca and Arthropoda being the most common. The dominant species were Tetraclita japonica, Bullacta exarata, and Cerithidea cingulata. The distribution of species varied in different tide zones, with Molluscs dominating in most sections. The biomass and abundance of macrobenthic animals ranged widely across the sampling sections. The analysis grouped the sections into rocky and muddy zones based on species composition. Overall, the study provides insights into the community structure of macrobenthic animals in the intertidal zones of Zhoushan Archipelago during the summer months.