Molluskien
Molluskien is the phylum Mollusca, a highly diverse group of invertebrate animals. It includes the gastropods (snails and slugs), bivalves (clams, mussels, oysters, scallops), cephalopods (squids, octopuses, cuttlefish), polyplacophorans (chitons), and scaphopods (tusk shells). Mollusks occur in marine, freshwater, and terrestrial habitats, from deep oceans to damp terrestrial environments.
Anatomy and organization: Mollusks are triploblastic and coelomate. Most have a mantle, a fold of tissue that
Diversity of life histories: Mollusks show a wide range of feeding strategies, including grazing on algae, filter
Shells and evolution: The shell is a characteristic feature for many mollusks but some lineages have lost
Human relevance and conservation: Mollusks are important for food (such as clams and snails), shells and pearls,