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Sea Shells

General information

Mollusks first evolved in the sea and have been adapting to its changing ecological niches for nearly 600 million years. So it is not surprising that marine species exhibit the phylum‘s greatest diversity. Mollusca in general exhibit more morphological diversity than any other phylum, including arthropods. The vast difference between the giant squid and microscopic nuculid clams is unmatched in the animal kingdom.

While many sea animals produce exoskeletons, usually only those of molluscs are normally considered to be "sea shells". The majority of shell-forming molluscs belong to the classes Gastropoda or Bivalvia. Three other shell-bearing classes are Scaphopoda , Polyplacophora and Monoplacophora. Some species of Cephalopoda also build shells, including the primitive Nautilus order which produces the famous "chambered Nautilus" shell; although some taxa of cephalopods such as octopi and squid only form small internal shells.

Some sea shells are carnivores, some are strict vegetarians, others are scavengers or parasites or commensals; the bivalves, for the most part are sedentary filter feeders, but some are predacious. Marine mollusks burrow, creep, tunnel, float or swim. They make their homes in mud, sand, silt, coral grit, rock, shell, tidal pool or grass.

Acanthocardia

Adula

Aequipecten

Anomia

Arca

Arcidae

Arctica

Atrina

Barbatia

Callista

Cerastoderma

Chama

Chamelea

Chlamys

Clausinella

Codakia

Crassadoma

Crassostrea

Ctenoides

Dendostrea

Donax

Dosinia

Ensis

Flexopecten

Galeomma

Gari

Gloripallium

Glossus

Glycymeris

Gryphus

Hippopus

Hyotissa

Isognomon

Laevicardium

Laternula

Leptopecten

Lima

Limaria

Limea

Lithophaga

Lopha

Macoma

Macomangulus

Magallana

Malleus

Manupecten

Mimachlamys

Modiolus

Monia

Muschel

Mya

Mytilidae

Mytilus

Nucula

Ostrea

Ostreidae

Panopaea

Paphia

Pecten

Pedum

Perna

Peronaea

Petricolaria

Phacoides

Pina

Pinctada

Pinna

Pitar

Pododesmus

Pteria

Pusula

Septifer

Siliqua

Solecurtus

Spondylus

Talochlamys

Tellimya

Tellina

Teredo

Thracia

Tridacna

Venerupis

Venus

Yoldia

Zirfaea