Simple riddles

I have a face like a tree and skin like the sea. A great beast I am, yet small vermin frighten me. What am I?

I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.

What kind of cup doesn't hold water?

It can be cracked, it can be made, It can be told, it can be played. What is it?

I have lot of memories, but I own nothing. What am I?

Pete is a worker on a large ship with hundreds of other men. He is constantly making mistakes, tying ropes the wrong way, steering the ship the wrong way, and making other blunders. One time he accidentally caused the ship to get stuck in a shallow shore, causing thousands of dollars in damage. However, when Steve, the captain of the ship, is asked about Pete, Steve says "I wish we had five men like Pete on this ship." Why would he say this?

Beth's mother has three daughters. One is called Lara, the other one is Sara. What is the name of the third daughter?

In a new Engineering Hostels they have 100 rooms. Ankit Garg was hired to paint the numbers 1 to 100 on the doors. How many times will Ankit have to paint the number eight ?

How can you leave a room with two legs and return with six legs?

What happens when you throw a blue rock into the yellow sea?