How do I climb the cliffs?

You could try scaling it with your bare hands.

That doesn't work.

You need something to help you climb.

Climbers often use grappling hooks.          

You need to get the buoy and the chandelier first.

To get a hint, click on the chandelier once, don't use it, and then use it
again.

The chandelier is made of three parts: an anchor, a candle, and some corks.