Conversation so far:
What did Stephen Hillenburg start his career in?
Stephen Hillenburg held various jobs in 1984, including as a park service attendant in Utah and an art director in San Francisco, before landing the job he wanted: teaching children.
What subject did Stephen Hillenburg teach when he became a teacher?
Stephen Hillenburg was a marine-biology teacher at the Orange County Marine Institute (now known as the Ocean Institute) for three years.
Did Stephen Hillenburg teach any other subjucts besides marine-biology along the years?
Stephen Hillenburg was a staff artist. During this period, Hillenburg realized he was more interested in art than his chosen profession.
Between the years of teaching marine-biology, did Stephen Hillenburg come up with Spongebob?
He created a comic The Intertidal Zone, to teach his students. It featured anthropomorphic forms of sea life, many of which would evolve into SpongeBob SquarePants characters Bob the Sponge.
What year was Stepen Hillenburg teaching or start?
Stephen Hillenburg found a job teaching in 1984.
What was the name of the school Stephen Hillenburg was teaching at?
Rhe Orange County Marine Institute (now known as the Ocean Institute).
What other jobs besides teaching did Stephen Hillenburg have in his early career?
There were jobs such as park service attendant in Utah and an art director in San Francisco.
Does the article state what the comic, The Intertidal Zone was about?
Stephen Hillenburg created The Intertidal Zone, to teach his students. It featured anthropomorphic forms of sea life, many of which would evolve into SpongeBob SquarePants characters Bob the Sponge.

Question: How did he come up with the idea of comics and/or Sponge-bob?
Self-contained rewrite: How did Stephen Hillenburg come up with the idea of comics and/or Spongebob?