A study was conducted in Subei Shoal, China to assess the diversity and distribution of marine organisms living on the seafloor. The researchers collected samples at different depths and found that Polychaeta worms were the most common species. Overall, the diversity and abundance of species were similar across different depths and survey times, except for a lower diversity at 5-10 meters deep. The ecological status of the area was moderate, with some stations showing better conditions than others. Certain species were found to be linked to specific environmental factors like depth and salinity.