"Nice scene well shot, great outfit, muddy fun! Buy it!"
A really nice little scene!
It starts with Nessie in to just below the hem of her skirt (i.e. skirt still clean). That doesn't last long as she steps forward and starts to sink.
The skirt-skinking takes a pleasantly long time (in a lot of sinking videos, the lower half tends to go under very quickly), and we get to enjoy the tide-line gradually climbing up her skirt, a clear demarcation between dry, yet-to-go-in and sunk-and-drenched.
Eventually she submerges below the waistline and the blouse starts to succumb, skirt now totally in the mud.
A nice steady sink to full submersion follows.
Then the mood changes and Nessie comes back to life and has a right old play about in the mud. Her once-white blouse gets lavishly treated and totally coated before she takes it off, leaving herself in skirt and bra. Before she takes the blouse off she lies back in the mud and performs something very similar to the old TISWAS classic "The Dying Fly", legs thrashing, giving a view of her mud-soaked boots as a bonus.
She finishes with a celebratory salute to camera, arms high much as a gymnast finishes an exercise. All while still waist-deep in the bog of course!
Technically it's superb, rock solid tripod shot throughout, camera looking down from a little above Nessie's head height, which is why we get such great views of the clothes sinking sections.