《太平广记·卷四百六十五·水族二》
蠔就是牡蛎，初时生在海岛边，像拳头大的石头，从四面渐渐地生长，有的长得高一二丈，象高大险峻的山。
蠔即牡蛎也，其初生海岛边，如拳石，四面渐长。
Oysters, initially found on the edges of islands, are fist-sized rocks that gradually grow from all sides, some growing to be one or two zhang tall like high, precipitous mountains.