Sealife guideBivalves: shellfish wonders of the oceanThe marine mollusks
Last updated on 09/02/2025 at 12:22 AM
The class of bivalves is characterized by a shell composed of two parts, called valves, which are hinged and more or less symmetrical.
The noble pen shell is a type of bivalve
The most well-known bivalves include oysters, mussels, scallops and clams.
Bivalves have a calcium carbonate shell equipped with strong muscles that can close the two valves tightly in response to external threats.
Bivalves feed by filtering water through their gills. The water current is generated by the action of tiny cilia.
Discover marine bivalves
Giant rock scallopCrassadoma gigantea
Great Atlantic scallopPecten maximus
Noble pen shellPinna nobilis
Spiny pink scallopChlamys hastata
Discover marine mollusks
Abe's polycera nudibranchPolycera abei
Brown edge glossodoridGlossodoris hikuerensis
Chambered nautilusNautilus pompilius
Chamberlain's sea slugNembrotha chamberlaini
Giant dorisFelimare picta
Spanish dancerHexabranchus sanguineus
Yellow speckled dorisHypselodoris godeffroyana
Zephyr dorisHypselodoris zephyra
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