There is also the type of sushi in which soft and not-easy-to-fix-on-the-rice topping items, such as salmon roe and sea urchin, are placed on the top of a hand-shaped vinegared rice ball wrapped by a sheet of dried laver so that the topping does not drop.
握った酢飯のまわりを海苔で巻いて、イクラなどの小さなものや、ウニのようにやわらかくて握りにくいものを乗せたすしもある。