But you missed one. It's also an ingredient for the explosive. And the big problem is that every time you need it, you have to go to the damn jellyfish, kill it, then go all the way back to where you need to use it. Four times. It's very annoying.
Ah, right. Forgot about that. But it's not that hard (or annoying) to me; simply don't bust out the block between you and it and keep firing missiles like a fiend. You don't need 'em for anything else there, so recharging it isn't a big deal.
But no matter how annoying it is, the Bubbler makes that extra trip worth it, doesn't it? Provided you're able to keep it @ Lv.3, that is.
Also, what's everyone's favorite Polar Star substitute (if any; some
masochists people apparently go through the game without exchanging it for anything, even the Spur)?
Me, it's a toss-up between the Machine Gun and the Spur. While the Spur IS the end-all weapon (you can keep your Nemesis, the Spur's low-maintenance and kicks ass indiscriminately), the Machine Gun still has that fun little hovering trick. And, after all, there's never such a thing as 'Enuff Dakka', as we all know.