Mollusca
Diversity About 80% of all known mollusc species are gastropods. There are about 93,000 named mollusc species, which include 23% of all named marine organisms. Molluscs are second only to arthropods in numbers of living animal species far behind the arthropods’ 1,113,000 but well ahead of chordates’ 52,000.:Front endpaper 1 It has been estimated that […]