 On July 8, 2012, Borgnine died of kidney failure at the age of 95.Following Borgnine's death, Nickelodeon honored him with a two-hour "SpongeBob SquarePants" marathon featuring episodes focused upon his character.The young Mermaid Man was voiced by Tom Kenny in the first season episode "Mermaid Man and Barnacle Boy," and by Adam West in the seventh season episode "Back to the Past."