note: bolding = word choice; underline = capitalization and punctuation
People say a monster lives in Butter Bay.
A boy called Bruce swam in the surf one day.
Suddenly an arm curled around his waist.
The water began to bubble.
Poor Bruce was pulled down.
The farther he went the more it hurt.
He struggled until he was free.
Two lifeguards brought him to the shore.
When his mother bought him a new pair of swimming trunks she put him in his drawer.
He has never worn them.
He is too scared to swim in Butter Bay.
He says it is not safe.
Would you swim there?
I separated them by sentences so the bolding and underline wouldn't be confusing. Hope this helps! :)