Swimming And An 18th Month Old A Good Way To Spend The Day With An 18 Month Old?

A Good way to spend the day with an 18 month old? - swimming and an 18th month old

Okay. So, my son hates the park .. Do not take it.
He loves to swim, but swim only 10.30-11.30 today. On
It just seems boring to me and not play with me, I try new things with it such as social things ..
I'm not sure what to do! How do you spend the day with your children?
I am 29 weeks pregnant, so it must be something I can do as well lol