Spiral piece of wood moves upstream

[MulderFBI]

Hi I have found a video which is composed of 2 videos. In the first one you can see that a spiral branch is put into a stream and starts to move by itself in a snake like motion.

In the second video similar spiral piece of wood is floating in a container and then water is poured into it and it starts to move upwards the stream of water. How's that possible? Thanks

 

[sophiecentaur]

i wouldn't be surprised if a bit of string was involved.

 

[Dale]

i wouldn't be surprised if a bit of string was involved.

That was my thought too. I can’t see the string, but it certainly moves as though it were being pulled by string.

The first one, in particular, seems like string. There is a wake, and they carefully avoid showing the front end of the stick before it is submerged.

 

[sophiecentaur]

Illusionists use fishing line. Fish can’t see it either.

 

[berkeman]

Since we don't debunk pseudoscience or fake videos, thread is done.