Wholesale Large Pacific Crown Conch Shells in Bulk, large hermit crab shells, Melongena patula measuring between approximately 4 inches and 4-3/4 inches (some may be a little larger). These Pacific crown conchs are dark brown in color with either vertical or horizontal tan colored stripes and have a white interior and make great homes for large hermit crabs.  These shells are real - not replicas.  They will have natural imperfections from living in the ocean.  No 2 will be identical.  They will vary in size, shape and coloring.