The museum introduces the knowledge of molluscs, shellfish such as snails, snails, and octopus squid and other animals without shells. The bi-crust, cephalopod, and gastropod are collectively called veneer, such as shellfish and snails. Molluscs have adapted to the changing living environment. Sea shellfish refers to shellfish living in intertidal zones, shallow seas and deep seas. Fresh water shellfish refers to shellfish living in freshwater environments such as rivers, lakes, streams and paddy fields. Lu shellfish is shellfish living in wetland forests and tree habitats. Taiwan's currents have black tides and surging currents, so that the nutrients in the deep sea bring rich nutrients to shellfish, and are divided into coastal shellfish, shallow sea shellfish, deep sea shellfish. Between 30 degrees north and south latitude, the water quality is clarified, and the coral reef ecology has appeared, so that we can better complete the coral conservation work.