Marineinvertebrates have been emerging as a very promising source of both natural products and enzymatic activities. In this contribution, we have tried to provide a general overview of the present knowledge of the enzymatic transformations and biosynthetic pathways in marine molluscs, suggesting that marine enzymes have great, yet unexplored diversity in both mechanism and structure. We hope that the extraordinary mechanism and catalytic reactivity discussed throughout the manuscript may serve as an inspiration in searching for novel biocatalytic properties
