The cause of death for Stephen Hillenburg has been revealed. According to his death certificate, the “SpongeBob SquarePants” creator died of heart failure as a result of his ALS.
The document also states that he was cremated and his ashes were scattered off the coast of California.
Stephen died last month after battling ALS for more than a year. He is survived by his wife and son. He was 57-years-old.