In Animation 3D, 2d is there, In 3D field there are departments of Modelling, Rigging, Sculptor, Animator, Efx, Match move. In VFX you will have different departments from the first Rotoscope, paint, compositing.

There are many Opportunities Now a Days,  Animation and VFX are used in Every Where  from the school educational videos to big feature film & many more.

Good Luck!