SCIENCE IN PICS: Giant ClamsThe giant clam, Tridacna gigas, is the largest species of bivalve mollusc in the world, reaching more than 1.2 meters (47 inches) in length and weighing over 200 kilograms (440 pounds).SavePrintEpoch Times Staff8/28/2011|Updated: 10/1/2015We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.