Conversation so far:
Is Stephen Hillenburg married?
He married Karen Umland
What does Karen Umland do?
a Southern Californian chef
Do Stephen Hillenburg and Karen Umland have kids?
The couple's first and only child, son Clay
What did Stephen Hillenburg do with his free time?
Make animations
Did Stephen Hillenburg do anything else with his free time besides make animations?
He was an ocean freak.

Question: Did he stick to himself mostly?
Self-contained rewrite: Did Stephen Hillenburg stick to himself mostly?