+Shellfish are aquatic invertebrates, often encased in a hard shell, valued globally as a food source. This diverse category encompasses [Crustaceans](/wiki/crustaceans) like shrimp and crabs, and [Molluscs](/wiki/molluscs) such as oysters and mussels, thriving in various aquatic environments. They play an important role in marine ecosystems and human diets worldwide.
+## See also
+- [Seafood](/wiki/seafood)
+- [Invertebrate](/wiki/invertebrate)
+- [Aquaculture](/wiki/aquaculture)
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