The Pacific geoduck (Panopea abrupta) is the largest burrowing clam in the world. This filter feeder spends its entire life buried in the sand with an exposed siphon or “show” which has two openings; one to take in nutrient rich water and the second to expel waste water. Pacific geoducks are one of the longest living animals on earth, and have reached the ripe old age of 168 years, but usually they live to 140 years. They can also be very large with an average weight of 1.5 pounds (0.68 kg), but some gigantic specimens have been found that weigh 20 pounds (9 kg), with an overall length exceeding 6 feet (2 meters). The Pacific geoduck is edible and commercially harvested. It would be ideal if more protected areas could be set aside to preserve and prevent the decline of this ancient ocean inhabitant. The Pacific geoduck has a shell that can reach 9 inches (23 cm) across, and a range that includes Siberia to Japan, central Alaska to central California, and Panama.