Where can I find details on long tail making and video and vertical fins

[Joy&RaptorsUnrestrained!]

Hi everyone!

I remember seeing some videos of a student film or something in some indoor pools with a number of merfolk in tails that were long and extended past the monofins to have an extra fluke another foot or three down, looking extra serpentine/inhuman at the cost of swimming speed. Anyone remember where those videos are/know if they've been taken down/have ideas on how to make a longer tail? Especially one with a vertical caudal fin?

Sent from my SM-G950U using MerNetwork mobile app (http://r.tapatalk.com/byo?rid=95032)

[Mermaid Jaffa]

I know the one you mean. I tried searching it on youtube with no results.

There is, Aquata Mermaid. She makes extended tails that are quite beautiful.
https://www.youtube.com/channel/UCXeS0vlrfvEsvBBshqGFl8w

And, Mermaid Lucia has snake tails. Inside is an articulated plastic spine for the snake movements but it doesn't use a monofin. You'd need pure strength to be able to swim in them. She has a youtube channel too, so you can see many snakes swimming about.
https://www.mermaidlucia.com/collections/mermaid/products/shooting-props-photography-dragon-snake-tail-mermaid-merman-tails