Even so, I imagine a race of what's effectively a cut of jello probably isn't something that could do anything but exist.

[img]http://catalystoc.com/blog/wp-content/uploads/2010/08/red-jell-o.png[/img]

They probably wouldn't have a central nervous system and an unprotected brain would leave them extremely vulnerable to a lot of things actually. Though I can see some things like swords being stuck before they reach wherever.