Bikini bottom 

(This is the final episode of it.) The Tortured One: “Hah! You’ll never beat me SpongeBob!”  SpongeBob: “Oh.. I will… do you know how sea sponge regenerate? If a sponge is broken into fragments or even separated into individual cells, it can reassemble itself into a new sponge. This process involves specialized cells called archaeocytes, which play a crucial role in aggregating and reorganizing the other cells.”