This part 1 of an old video of mine from 2021, where I sank to my ears in thick, ultra-smooth tidal silt. This is possibly one of the best spots I've ever had the pleasure of sinking into... the spot is ultra-private and off the beaten path. The only way to get to it is via a kayak. It is located on the outskirts of a quiet nature reserve in central Delaware. There's no bottom and it takes effort to sink deep, but there are literally acres and acres of mud at this spot, and there are spots that are thinner and easier to go deep in, but this one has thick and heavy mud that feels Amazing.
If you have a kayak and are near central Delaware (the spot is halfway between Wilmington and Dover)... DM me if you want more info or are interested in potentially meeting up.