How would I make a mesh move like the kelp / plant in this video? I have no experience writing shaders, but this sort of thing is essential for a game I am trying to make.
Where would I start on this? This seems like a pretty simple shader to make, but I have nothing to work with.
Thank you 
Move the vertices with a wave. The unity docs have examples of basic vertex manipulation. What you want is basically a normal foliage shader.
If uve no experience with shaders then it may be quite difficult yet challenging to create such thing from scratch:) As somebody mentioned - try to use existing foliage shaders
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