I worked this case quite a bit a few years ago. No ID, no DNA, no prints. The only thing we have is the serial number of the suit. I tried to contact the successor to the manufacturing company and no one would return my calls. We felt, based on currents and the suit, that he was from a vessel in the Pacific northwest. That type of suit is intended to a) keep you afloat, b) keep you from getting hypothermia, and c) make you visible to rescuers. You will bob like a cork in it. It would be so unusual in a warm water area that the authorities in Hawaii did not even know what it was and called it a SCUBA suit. I went around and around with people on this forum about what it was and what it was for. I’ve been a diver for 42 years and have actually donned an exposure suit of that type. It is not easy. He did not come to grief while diving in Hawaii, that’s for sure.
I invite you guys to have another go at the serial number of the suit. It’s all we got. I wish you better luck than I had.