I was going to post attacks, but something in Hia's reffing just caught my eye...
"Far-set eyes..."
OK, let's look at this from a scientific viewpoint. Seadra is about 4 feet tall, which means that its snout is probably only about as long as my forearm. Ergo, its 'nozzle' is, at most, the size of my fist.
Armaldo, on the other hand, is about 5 feet tall, and its head is at least 1/3 as wide as it is tall. That means its eyes must be somewhere between 15 and 20 inches apart.
So... how does a projectile about the size of a baseball manage to strike an area that broad sufficiently enough to induce blindness? Even if it just splattered outward from the middle of AA's forehead, I doubt it'd do so in a great enough quality to do much more than irritate his eyes a bit. But total blindness? That just doesn't look plausible to me.