Sushi is not considered seafood as Sushi is not actually fish but instead refers to a type of dish that is sometimes made with fish.
While traditional sushi features raw seafood, it's not a component necessary to consider a dish sushi.
Modern takes can include cooked seafood, veggies, or even other meats.
Sushi doesn't need to include raw fish (or fish at all) to be considered such—only vinegar rice
Sushi is a traditional Japanese dish prepared with vinegared rice with some sugar and salt accompanied by a variety of food items such as vegetables or seafood.
Styles of sushi and its presentation vary widely, but the one key ingredient is "sushi rice", also referred to as shari, or sumeshi.
Sushi is made of small pieces of raw fish that are wrapped in rice and seaweed.
The seaweed, called nori, is collected with submerged bamboo nets.
While some sushi is mass-produced using robots, the best sushi is made by hand.
While many people assume that sushi is also raw fish, it is actually vinegar rice that is mixed with a number of other ingredients, which can include either cooked or raw fish.
While raw fish may be a traditional staple in most types of sushi, it is not a prerequisite for this dish.
Seafood is any form of sea life regarded as food by humans, prominently including fish and shellfish.
Shellfish include various species of molluscs, crustaceans, and echinoderms.
Seafood comprises all bony fishes and the more primitive sharks, skates, rays, sawfish, sturgeons, and lampreys; crustaceans such as lobsters, crabs, shrimps, prawns, and crayfish; mollusks, including clams, oysters, cockles, mussels, periwinkles, whelks, snails, abalones, scallops, and limpets; the cephalopod mollusks.