English: Gigas clam; French: Bénitier géant, tridacne géant. PHYSICAL CHARACTERISTICS
Shell is heavy, fluted with 4-6 rather smooth folds; has central umbo and relatively small byssal notch. Color is whitish. Largest extant bivalve species; the largest existing specimen, in the American Museum of Natural History, is 4 ft, 5.9 in (136.9 cm) long and weighs 579.5 lbs (262.8 kg). Interior is porcelain white. Mantle is brightly colored, yellowish brown to olive-green with iridescent blue-green spots, fused except for the incurrent and excurrent siphons.
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