The owl statue told me that the stone statues in the Moonlit Grotto don't fear swords. I have figured out that I have to hit them with bombs, but I keep running out because they don't seem to go where I drop the bombs. I tried watching them to see if there was a pattern but it seems that they just go wherever at random. This makes it really hard to hit them.
Is there any sort of pattern to their movement or strategy I can use to hit them all?