The present paper deals with seasonal variation of organic acids in baby clams. The followings are evident in the present analyses (Table 1). 1) The baby clam in winter contains smaller amounts of fumaric acid, oxalic acid and malic acid than the clam in other seasons. 2) The amounts of succinic acid and fumaric acid are on the decrease in a spawning-season. The results have been shown in Figs. 2-5.
