Abstract: The invention relates to a surgical apparatus that includes an easily retrieved biological specimen pouch. The pouch has a flexible wall, a serrated open end and a closed end. There are a plurality of string-hosting slots and a plurality of notches at the open end. The plurality of string-hosting slots and the plurality of notches are alternately positioned along the open end. A control mechanism having a tube and a rod inside the tube is connected to at least one of the first and second ends of the open and retrieval string. In response to a movement of the rod relative to the tube in a first direction that pulls the open and retrieval string out of the string-hosting slots, the plurality of notches at the serrated open end are substantially drawn closer to one another, resulting in a closure of the serrated open end with a relatively small dimension.