Mesh-Based Ribbon Effect Like Zerg Tentacles

Hello there! I've been researching ways to get ribbon like effects working in Unity, and so far the best I've found is using a trail module on a particle emitter set to ribbon with invisible particles so all you see is the ribbon.

I still feel like I haven't quite gotten what I was hoping for, which is something along the lines of the tentacles a lot of zerg units have in Starcraft 2. Here's an example (flying guy on the right, forgive the the extremely random video!)

Does anyone more experienced know how they would go about creating something like this in Unity? The thing I love about it is how it stays super smooth without a lot of jagged steps I get from the ribbon module. It also seems to maintain a consistent overall size and shape. To be clear, I don't even know for sure this is done with a particle emitter in Starcraft, but that's all I can think of when I see it.

Any help would be much appreciated.