One of my favourites at a Japanese sushi restaurant is the appetizer of soft-shell crab. Found along the east coast of the United States is the species, Callinectes sapidus. This is the blue crab that is found along the eastern coasts of the United States. It is when these crabs grow too large for their shell that they "burst" out of their shells and then have a "soft shell." Usually the high season for "soft shell" crabs to be found is in the Spring. They are often so small that they can fit inside the palm of your hand.
The most delicious way to eat a soft shell crab is by lightly dusting it with seasoned flour, then sauteing it in butter. Once browned, add a squeeze of fresh lemon juice. You usually can find them on the menu in Japanese restaurants. Tender and crispy make these a wonderful appetizer to any seafood meal.