Morph a ball into another (Terminator T1000 style)? Is there any way to achieve this effect: Where a ball intersects and "morphs" into another ball like this (Terminator T1000 style)...?

E.g: I have this blob that needs to morph into this wall, but the wall won't really change in thickness.



Thanks in advance.
You can do this effect with Meta objects.

Shift+A > Metaball

They work like this: