is any sea animal or seaweed that
is served as food or is suitable for
eating. This usually includes seawater
animals, such as fish and shellfish
(including mollusks and crustaceans).
By extension, in North America although
not generally in the United Kingdom,
the term seafood is also applied to
similar animals from fresh water and
all edible aquatic animals are collectively
referred to as seafood. Edible seaweeds
are rarely considered seafood, even
though they come from seawater and
are widely eaten around the world.
See the category of sea vegetables.
The harvesting of seafood is known
as fishing and the cultivation of
seafood is known as aquaculture, mariculture,
or simply fish farming.