Invertebrates > Bivalves
AT A GLANCECommon Name: Freshwater Pearl MusselScientific Name: Margaritifera margaritiferaCategory: InvertebratesSubcategory: BivalvesSize: Shell length: 4.0–6.0 in (10–15 cm)Weight: 5.0–12.0 oz (140–340 g)Lifespan: 100–200+ years; one of the longest-lived...
Invertebrates > Bivalves
AT A GLANCECommon Name: Ocean QuahogScientific Name: Arctica islandicaCategory: InvertebratesSubcategory: BivalvesSize: Shell length 7 to 11 cm (record documented up to 14 cm / 5.5 in); thick, heavy, circular bivalve shellWeight: 150 to 350 g per live clamLifespan:...
Invertebrates > Bivalves
AT A GLANCECommon Name: Soft-shell ClamScientific Name: Mya arenariaCategory: InvertebratesSubcategory: BivalvesSize: Shell length 7 to 10 cm (exceptional specimens up to 15 cm / 6 in); thin, brittle, chalky-white oval shellWeight: 50 to 150 g per clamLifespan: 10 to...
Invertebrates > Bivalves
AT A GLANCECommon Name: Hard ClamScientific Name: Mercenaria mercenariaCategory: InvertebratesSubcategory: BivalvesSize: Shell length 7 to 12 cm (exceptional old specimens reach 15 cm / 6 in); heavy, thick, ovate triangular shellWeight: 100 to 450 g per live...
Invertebrates > Bivalves
AT A GLANCECommon Name: Atlantic Sea ScallopScientific Name: Placopecten magellanicusCategory: InvertebratesSubcategory: BivalvesSize: Shell diameter 10 to 15 cm (record documented up to 20 cm / 8 in); large, fan-shaped saucer shellWeight: 150 to 450 g per live...
Invertebrates > Bivalves
AT A GLANCECommon Name: Eastern OysterScientific Name: Crassostrea virginicaCategory: InvertebratesSubcategory: BivalvesSize: Shell length 8 to 15 cm (exceptionally up to 25 cm / 10 in); irregular, rough shellWeight: 100 to 300 g per mature oysterLifespan: 10 to 20+...
Invertebrates > Bivalves
AT A GLANCECommon Name: Hydrothermal Vent MusselScientific Name: Bathymodiolus thermophilusCategory: InvertebratesSubcategory: BivalvesSize: Shell length: 5–8 in (13–20 cm)Weight: 7–14 oz (200–400 g)Lifespan: 15–25 years in active hydrothermal vent fieldsDiet:...
