Turbanshell seasnails on Miyajima Island. June 1, 2016 700 × 933 Japan | Food Culture | Photos By Nate Gray Turbanshell seasnails on Miyajima Island. Turbanshell seasnail shells (sazae or サザエ) on Miyajima Island, often grilled in the shell, a method known as tsubo-yaki (壺焼き).