The general term of this kind of seafood is "sushi," a Japanese tradition. I believe sushi is an acquired taste.
Mooncakes are a Chinese tradition. They are usually eaten during the Mid Autumn Festival, which is September 15 on the lunar calendar. On this evening every year, people gather and think of their relatives, living or dead, under the bright moonlight.
Apples are, well, apples.
Lobsters are the favorite seafood for many. Legend has it that the first people to eat them were the prisoners off the coast of Maine. Apparently lobsters do not get old and won't die of old age.