The document provides an overview of the phylum Mollusca, including general information about their anatomy, habitat, reproduction cycles, classes, and examples. The phylum contains over 90,000 living species ranging from microscopic to over 20 meters in size. They are mostly marine but also found in freshwater and terrestrial environments. Their body plans and features vary between classes but generally include a mantle, visceral mass, and foot, with some having shells.

1. Phylum Mollusca Examples

5. Generalized Trochophore Larva

18. Bivalve life cycle This one!