It all start with a sketch. Sean posted these on this website back in January, and wrote:
"What is the OPUS V? Octo-pod Underwater Salvage Vehicle. Or Octo-pod Underwater Salvage #5. Take you pick. Thanks to my wife Kate for coming up with the name.
As I said before, I envision this as a toy set, with an articulated, mechanical octopus with poseable tentacles, opening cockpit, lots of detail and possibly some LED lighting. It will sit on a display base that looks like a portion of ocean floor and will have a shipwreck or some type of salvage laying around."
Photo courtesy Sean Charlesworth