I know it looks different but its not what you are imaging, to make it simple its a very large species of saltwater clam which is called as Geoduck (pronounced gooey duck). The shells can reach 15 to 20 centimeters in diameter, and the siphon, or neck reaching as long as 3 1/2 feet, the average specimen weights between 1 and 3 pounds, though some reports have them weighing in at over 15 lbs, and have been commercially harvested since 1989. And most sales go to Asia where it is considered a delicacy and sells for about $30 a pound. The Geoduck trade today is an $80 million dollar a year US industry. Actually speaking its not a bad deal for 145 years.
They also earn the title of one of the longest living animals on the planet with a life expectancy of about 145 years (The oldest recorded at 160 years old).