Lanayru Mining Facility
You have to focus the eyeballs in his claws. His claws rotate, so you'll have to adjust the direction you swing your sword. Focus on one claw until it breaks off. Then as you're getting the other claw, be careful of his tail attack. After you destroy both of his claws an eye on the front of his head will appear and he will burrow. Use your leaf blower to expose him and use stabbing attacks on his last eye until you kill him.