Shellfish are aquatic animals that have a shell, including both crustaceans like shrimp and crabs, and mollusks such as clams and oysters. These creatures play a crucial role in marine ecosystems and are significant for their economic value, particularly in aquaculture and fisheries. Shellfish are also affected by environmental changes, such as ocean acidification, which can impact their growth and survival due to their reliance on calcium carbonate for their shells.
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