"We are sad to share the news of the passing of Stephen Hillenburg, the creator of SpongeBob SquarePants," the network wrote. "Today, we are observing a moment of silence to honor his life and work."
In a report by Variety last year, Hillenburg revealed that he had been diagnosed with the neurodegenerative disease ALS, also called Lou Gehrig's disease. At that time, Hillenburg also told Variety that he intended to work on his show "for as long as I am able."
SpongeBob SquarePants has aired on Nickelodeon since 1999, and according to Stephen Hillenburg's IMDB profile, he was 57 years old.
Now, what was your favorite memory of SpongeBob SquarePants? Don't forget to share your thoughts in the comments section below.