The “Philippine Marine Mollusks” volumes are setting the modern standards for Marine Indo Pacific Mollusks in general. They are a summary of the confirmed knowledge on Philippine marine mollusks and cover all groups of mollusks, including nudibranches. The books cover over 3600 species and count about 10000 photographs on approximately 1315 color plates in A4 format. Hundreds of species are shown alive with underwater photographs.

Volume II starts with a foreword of Mr. M. Sarmiento, director of the Bureau of Fisheries and Aquatic Resources of the Philippines. This volume has more plates than Volume I; there is a total of 395 full page color plates and the book counts 849 pages. A short bibliography and a practical index, with an erratum to Volume I, close the Volume II.