Twilight Princess Unkillable Ice Bubble?!?

[Zeldawolfsheik]

Recently, I was playing TP and went into an underground cave, and killed all the enemies to get rupees, yet no chest appeared.
I looked around and saw an ice bubble in the air flying about. I tried every weapon but none seemed to kill it. Everything just flew right past it.
I exited the cave and reentered and destroyed it. What happened? Some kind of bug? Or do i just have crappy aim?

 

[JuicieJ]

Did you try your sword? That tends to be the sure-fire way to kill them.

Anyway, I don't know what this was, perhaps it was a glitch. I've never heard of anything like it.

 

[LinkLover]

I have never heard or seen anything like that. I am guessing it was some kind of weird glitch. It is interesting though...