Weighing up to more than 400 lb. in the wild and living to over 100 years old, the giant clam grows to its tremendous size due to its symbiotic relationship with the algae that live within it. We love a win-win. The largest of the clam shells we offer at House Parts — this was originally cast from a shell sourced from the Indian Ocean. Dimensions: 27" L x 15" W x 15" H, Weight: 22 lb. Hand Cast in Plaster; variance in appearance may occur Made to Order; Ready to Ship in 2-3 weeks Shipping Dimensions: 32" x 20" x 20"