What Am I Riddles

Question: I open to close but I close to open.
I'm surrounded by water but I'm never soaking.

What am I?

Question: One evening a man started to run. Then he turned left. Soon after, he turned left again. Then he started running home. When he got home there were 2 masked men waiting for him. Who were they?

Question: What gets easier to pick up the larger it gets?

Question: What has a face and two hands?

Question: Under pressure is the only way I work,
and by myself is the only way I'm hurt.

What am I?