The scientists studied the underwater life in Aenggang Bay, Korea. They found 233 different species living there, with worms, crustaceans, and mollusks being the most common. Worms were the most abundant, and echinoderms were the heaviest. Some species were more common in certain parts of the bay. The eastern side had more types of creatures and more of them compared to the western side. The researchers divided the bay into five regions based on the types of creatures living there.