I tried to connect my part with the other parts but my part has a curve surface so I struggled to align them together. I tried to crate a surface on my part and use that surface to align with the other piece. It didn't work out that well but I tried my best.
For the assemblies, I followed a tutorial on youtube to make this.
4 Bar linkage project idea.
I want to mimic the movement of a 2D whale floating/jumping on the surface of the water.
This is my desired path which will be the movement of the center of the body of the whale.