User blog comment:SuperStrawHatSaiyan/Are You Gonna Fix It, Toei?/@comment-34954086-20130110092449

Honestly, I only saw the stuff about "single limb activation" etc. Here. In the manga it really didn't seem to be an issue, wasn't raised and can largely explained by focus, artistic and space restriction purposes. What they did in the anime made sense.

Oh and fire can stay alit under water. Look up quicklime.