The mollusc (or mollusk[a]) shell is typically a calcareous exoskeleton which encloses, supports and protects the soft parts of an animal in the phylum Mollusca, which includes snails, clams, tusk shells, …

Dec 19, 2025 · Mollusk is any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.

Mollusc shells are defined as typically layered structures composed primarily of calcium carbonate in the forms of calcite or aragonite, along with organic materials such as proteins and polysaccharides.

Nov 28, 2025 · Understand the biological marvel of mollusk shells. Discover the precise scientific processes governing their composition, incremental growth…

Not all molluscs produce shells, but amongst those that do there are many variations on the basic shell structure. Despite their diversity of colours and forms, mollusc shells are largely made of the same …

Jul 17, 2025 · Mollusks or Molluscs are a group of soft-bodied invertebrates distributed across marine, freshwater, and terrestrial habitats. They belong to the phylum Mollusca, the second largest after …

Mollusks are a diverse group of invertebrate animals that belong to the phylum Mollusca. They are soft-bodied creatures, typically protected by a hard shell, although some mollusks lack shells or have …

The generalized mollusc is an unsegmented, bilaterally symmetrical animal and has a single, " limpet -like" shell on top. The shell is secreted by a mantle covering the upper surface.

Mollusks are soft-bodied invertebrates of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.

They live in freshwater and terrestrial habitats and they are highly diverse, concerning size, anatomical structure behaviour and habitat. The scientific study of molluscs is called malacology branch called …