In a sushi bar , `` hotategai '' ( 帆立貝 , 海扇 ) is the traditional scallop on rice , and while `` kaibashira '' ( 貝柱 ) may be called scallops , it is actually the adductor muscle of any kind of shellfish , `` e.g. '' , mussels , oysters , or clams .
In a sushi bar , `` hotategai '' ( 帆立貝 , 海扇 ) is the traditional scallop on rice . `` Kaibashira '' ( 貝柱 ) might be scallop , but it can also be the adductor muscle of any kind of shellfish , such as mussels , oysters , or clams .