These are Nigiri-zushi of spear squid.
"Nigiri-zushi" is a typical sushi dish.
Sushi rice is formed into an oblong shape by hand.
Usually place thinly sliced seafood on it.
"Yariika" means spear squid.
It is good for Sushi and Sashimi.
Yariika in this photo is small Yariika which is befor grow up.