Pitcairn Islands Philatelic Bureau released on 31 October 2012, a set of 4 WWF stamps on fluted giant clams. The issue comes in 2 sheet format, a minisheet with 2 sets of stamps, and another full sheet with 4 sets of stamps. The design on the selvage on both types of sheet format contain scuba divers carrying underwater photographic equipment. The scuba diver on the minisheet is found at the top right corner, while in the full sheet, the diver is at the bottom left corner.