As a group, bivalves have no head and lack some typical molluscan organs such as the radula and the odontophore. Their gills have evolved into ctenidia, specialised organs for feeding and …

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 …

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 divided from front …

Nov 24, 2025 · Beyond water purification, bivalve organisms serve as a foundational element in many food webs, providing food for crabs, fish, and birds. Their shells also create complex …

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 …

Bivalves are creatures with two (2) shells (valves): The main body and internal organs of a bivalve are enclosed inside a hinged, two-part shell made of calcium carbonate. Even though the …

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 …

The bivalves are a large class of molluscs, also known as pelecypods. They have a hard calcareous shell made of two parts or 'valves'. The soft parts are inside the shell. The shell is …

Nov 3, 2025 · Virtually all bivalves, with the possible exception of the thorny oyster Spondylus, are edible and fall into the main categories of oysters, mussels, scallops, and clams. A number of …