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Ground screw foundation.
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Previously:
Expanding foundation foam - GIF
Foundation piling rotary drilling rig - GIF
Giant core barrel for drilling foundations - video and photo
Handy Pier foundation - GIF
Lowering a foundation wall into the ground - GIF
Chesapeake Bay has a mud bottom. Over a century ago someone figured out how to screw threaded pipes onto the mud and build a lighthouse on this foundation. One has been preserved at St Michaels Maryland.
Screw piles are pretty common, but I've never seen them with tiny little flutes like that. They normally look more like an auger. Personally I think they're great. I like them way better than bell piles (if you can get away with it).
https://stop-digging.com is the company featured in the video
They estimate the service life is 100 years - not sure I believe that... I pulled out some ground rods that had been buried for 20 years and the galvanizing was gone and some of the iron underneath was erroded.