Skulltulas are reoccurring enemies in Zelda. they are spider like creatures with a hard shell but soft belly.
The Legend of Zelda: Ocarina of Time and Majora's MaskEdit
Skulltulas act exactly the same in both these games. Skulltulas hang off a string. If Link gets to close they will spin and hurt him but when they have their belly towards him Link can run up and attack it. These are easiest to kill from a distance.
In this game Link has to fight Skulltulas while their on the ground. Skulltulas will run at Link and Link must wait till they bring up their head so Link can swipe below it and stun a little. Then, he can attack from anywhere in the front.
The Legend of Zelda: Phantom HourglassEdit
Skulltulas appear in the ghost ship. They fall from the ceiling and Link can attack them from anyside. These are the only enemies in the ship that scare the Diabolical Sisters. When they see one they scream which gets the attention of all Reapers on the floor.