How would I make a fluid IK fish tail?

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#1

Hello, right now I’m attempting to make an underwater based game. Currently, my hardest problem is making a fluid tail that trails behind the fish.
I thought of using inverse kinematics for this, and after looking at topics similar to mine, I realized I have absolutely no idea how to use inverse kinematics to make this.

So is there anyway to make the tail sort of “drag” behind the fish, because whenever it turns it looks very stiff and not fluid. Thanks for you help!

#2

Can you just use a TorsionSpringConstraint and let the physics engine do it for you?

#3

I’ll definitely look into this and see what I can do!