日本小商人吉田正夫有一次去菲律宾探亲。他看到海边石堆里有一些成双结对的小虾，好生奇怪。细问之后才知道，这些小对虾，自幼钻进海边石头的隙缝里，在里面长成无法出来的雌雄虾，在石缝中相伴度过它们的一生。吉田正夫还了解到，在当地，这些小虾作为玩物出售，生意却很平 Masayoshi Yoshida, a small Japanese businessman, once went to the Philippines to visit relatives. He saw some pairs of shrimp in the seaside stone pile, so strange. After careful inquiry, I learned that these small prawns, who had drilled into the seams of the seaside stones in their childhood, grew into unattainable males and females, spending their lives in the crevices. Masao Yoshida also learned that locally, these shrimp are sold as plaything, and the business is flat