When he opens his mouth, just pop a couple of missles (or charged shots, I guess) in there. Make sure you do as many as possible, as quickly as possible, so he doesn't have much room to move back up.
Leave Norfair. Go through the 3 rooms of Maridia. In the room where you re-enter Brinstar, there is a secret passagenear the door on the left end of the room. go up there.
Thanks, oh and by the way, i finished metroid 2 just now! Thanks for your help though throughout both of the games, i couldnt have done metroid 2 without you :P :P
Well ive beaten corcmire, but now im having trouble on...well.....that boss on the wrecked ship. Phantoon or something? Well i can get his health all the way down (i can etll because he goes bright red) and the attack that i cant avoid and which keeps killing me is where he fires aload of blue, urm, things in a sort of circle away from him. They cover the whole screen and i can never shoot them. Any help please, because im too rubbish at metroid games to go without any help!
Well, I was going to go to norfair to get the wave beam, but i thought id give it one more try because im lazy and couldnt be all that bothered to go look for the wavebeam. So i ended up beating him (thanks to my reserve tank) Oh and....YEY!