How do you kill a Big Octo in Legend of Zelda Majora's Mask?

Answer 1

It is easy!

first boss in sea is a sea octapus with a eye: in front of moldia island

how to see it:get the sun key to the sun temple

2;a hurricane sea cyclone with lights:

where: in front of goron island

how to see: go in front of goron island

3: it is same as first exept in front of bannan island

how to see it: give the sweetheart to the old wayfyer in a traveler ship furst go to northeastern and then northwestern and then south eastern traveler ship and the the first sea to get it and you will get a swordmen scroll after it and the swordmen scroll will let ya use great spin

final:ghost ship

how to see: beat bellum

area: ??? it is unkown you have to tilt the ds to hit it

that is all of them unless their are more events

Answer 2

You have to take the Tour ride from Koume to kill the Big Octo with the boat in the beginning, but if you have any projectile items to shoot at it you can kill it with them.

Answer 3

Do you mean the one inside jabu-jabu? Hit it with your boomerang, it'll freeze. When it re-animates, it'll turn around. Hit it with your boomerang again, and it'll reveal a weak spot on it's back. Slash it with your sword (or slingshot it) to injure it. Repeat as needed.