I see tons of geoducks under water, below tidal zone. Literally everywhere if bottom is sandy and not solid rock. How can they be picked up? Not by pulling on one end I suppose. Internet search brings either diggin with big PVC pipe, or commercial video's. In commercial harvest they seem to used some kind of nozzle with water jet I guess to wash them out, hard to see exatcly what divers are doing from video. I wonder if there is a technique freediver can use.