This paper is concerned with the size composition, and occurrence, distribution and abundance of scallops (Amusium pleuronectes) obtained from the trawl catches of the R/V ALBACORE in the Visayan Sea from June 1976 to March 1977. The results showed that the sizes of 1,114 scallop individuals vary from 21 to 91 mm, with an average of about 66 mm shell height; the majority of the scallops, of the size group 61-70 mm, are taken from fishing track 12; scallops are found in the Visayan Sea throughout the year, but their abundance is seasonal with a peak in June through August; and scallops in this study are distributed along the coastal waters of eastern Panay and northeastern Negros, on soft (sandy-muddy to muddy) substratum in depths up to approximately 40 m.