In addition, while awabi have large-diameter holes with an elevated edge similar in appearance to the crater of Mt. Fuji, the holes on a tokobushi have no such elevated edge around them and are not so large.
また、アワビでは穴の周囲が富士山の噴火口のように盛り上がっており穴の直径も大きいのに対し、トコブシでは穴の周囲は盛り上がらず、それほど大きくは開かない。