f84r "Covered Pool"

[MarcoP]

An image from Koen Gh's recent post on another thread seems highly relevant to understanding what may be going on here.
From f80r:



As we can see, the flow here is represented differently above and below the nymph's hand: above, we have an elongated, continuous wavy line, and below, the type of squiggly lines that we see in 86r.
The distinction leads me to believe that the depiction of squiggly lines in You are not allowed to view links. Register or Login to view. is significant: in the image above, the passage via the nymph's hand on seems to alter the fluid.
Whatever alteration is produced results in the type or state of fluid that is represented in the 86r "covered pool".

A straightforward explanation for the phenomenon on 80r could be what we can observe when we put a hand under the water coming out of a faucet or hose: it disrupts the steady stream of water, and causes the water to spray around more.
Another comparison is the difference between the way water comes out of a faucet vs. a showerhead.
Could the squiggly lines represent fluid that is agitated or being sprayed rather than flowing?

A similar alteration occurs in the flow on f79r, but here it is unclear whether it is caused by passage through the top nymph's hand or the tubing structure/ apparatus directly underneath it:
...

Thank you, Koen and VViews! I find these ideas very interesting. I'll keep your observations in mind and see if I stumble on some potential parallel.