She switches to the backstroke after ten laps. Ten more and she rolls over again; breaststroke. She has waterproof headphones and an audiobook going.
"...okay, that actually does sound cute."
"And it didn't approach anybody, it just swam around and then away."
"Aww. Adorable. I know sharks don't like the taste of your flesh but I still find them kinda terrifying."
"People are very rarely bitten by sharks."
"Do you have statistics on it?"
"I'd have to look it up."
"You mean to say you don't have the rate of shark attacks memorised? The shame!"
"I'm a terrible statistician."