The shell of a bivalve is composed of calcium carbonate, and consists of two, usually similar, parts called valves. These valves are for feeding and for disposal of waste.

Dec 5, 2025 · Bivalves are a group of freshwater and marine mollusks with bilaterally symmetric and laterally compressed bodies encased in a characteristic two-part shell. They belong to the …

Nov 3, 2025 · Bivalve, (class Bivalvia), any of more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is …

Jun 16, 2024 · What is a bivalve mollusk? Bivalve mollusks (e.g., clams, oysters, mussels, scallops) have an external covering that is a two-part hinged shell that contains a soft-bodied …

Bivalves are a diverse group of mollusks that includes clams, oysters, scallops, and mussels. They have two shells and live in both freshwater and saltwater all over the world. Bivalves are …

Jul 31, 2025 · Bivalved animals represent a widespread and diverse group of aquatic invertebrates, belonging to the phylum Mollusca. They inhabit both marine and freshwater …

Jan 26, 2001 · Also known as pelecypods, the approximately 15,000 species of this taxon are found in marine and freshwater habitats throughout the world. A bivalve is characterized by …

Nov 3, 2025 · Bivalve - Mollusk, Shell, Filter Feeder: The bivalve shell is made of calcium carbonate embedded in an organic matrix secreted by the mantle. It has a simple nervous …

Bivalvia ("two valves") refers to the fact that most members of this group have two-part calcareous shells, or valves, that are hinged and more or less symmetrical.

The second most diverse group of molluscs behind gastropods, bivalves are one of the most important members of most marine and freshwater ecosystems. In fact, there are well over …