Seafood
Seafood is any sea animal that is served as food or is suitable for eating. This usually includes sea water animals, such as fish and shellfish (including mollusks, and crustaceans). These sea water animals are also collectively referred to as seafood.
Edible plants of the sea are not considered seafood, even though the come from sea water and are eaten in some parts of the world, for example, edible seaweed (known in Japan as nori) and algae.
The harvesting of seafood is known as fishing and the cultivation of seafood is known as aquaculture or mariculture.
Dishes
Seafood is a source of protein in many diets around the world. See Wiki cookbook