Can you give me a sentence of ocean in a noun?

A noun functions as the subject of a sentence or a clause, and the object of the verb or a preposition. Examples for the noun ocean:

The ocean looked bright and blue from our balcony.

I picked up a curious object that the ocean had dropped at my feet.

A splash in the ocean will perk you right up.

"I will drown that punk in the ocean so that nobody will find him."