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The California mussel is a large edible mussel, a marine bivalve mollusk in the family Mytilidae.

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Clinocardium nuttallii, the basket cockle or Nuttall's cockle, is a species of large edible saltwater clam, a marine bivalve mollusc in the family Cardiidae, the cockles.

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Isognomon californicum, the black purse shell or nahawele, is a species of Hawaiian bivalve in the family Isognomonidae. It was first formally named in 1837 by Timothy Abbott Conrad as Perla californica.

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The James River spinymussel is a species of freshwater mussel in the family Unionidae, the river mussels. This species is native to North Carolina, Virginia, and West Virginia in the United States. It is a federally listed endangered species of the United States.

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Leptopecten latiauratus, common name the kelp scallop, is a small saltwater clam, a bivalve mollusk in the family Pectinidae, the scallops. It lives in water up to 850 feet deep. Like other scallops it has many small primitive eyes around the rim of its mantle and escapes predators by jet propulsion.

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Leukoma staminea, commonly known as the Pacific littleneck clam, the littleneck clam, the rock cockle, the hardshell clam, the Tomales Bay cockle, the rock clam or the ribbed carpet shell, is a species of bivalve mollusc in the family Veneridae. This species of mollusc was exploited by early humans in North America; for example, the Chumash peoples of Central California harvested these clams in Morro Bay approximately 1,000 years ago, and the distinctive shells form middens near their settlements.

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Macoma nasuta, commonly known as the bent-nosed clam, is a species of bivalve found along the Pacific Ocean coast of North America. It is about 6 cm (2.4 in) long. It is often found buried in sands of 10–20 cm (3.9–7.9 in) in depth. This rounded clam has no radial ribs. Archaeological data supports the use of this species by Native Americans such as the Chumash peoples of central California.

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Modiolus capax, common name fat horsemussel, is a species of "horse mussel", a marine bivalve mollusc in the family Mytilidae, the mussels. It was first described to science by American malacologist Timothy Abbott Conrad in 1837.. The type specimen was collected in San Diego by Thomas Nuttall.

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Tagelus californianus, common name California tagelus, is a species of saltwater clams, marine bivalve mollusks belonging to the family Solecurtidae.

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Tresus nuttallii, common name the Pacific gaper, is a species of saltwater clam, a marine bivalve mollusk in the family Mactridae. It also shares the common name horse clam with Tresus capax, a species which is similar in morphology and lifestyle. Both species are somewhat similar to the Geoduck, though smaller, with shells up to eight inches long (20 cm), weight to 3–4 lb (1.4–1.8 kg).