Santa and Mrs. Claus are enjoying a yuletide seaside vacation, where the mermaids make merry, and the sharks stuff their stockings with care. Hosts Ree Drummond and Eddie Jackson invite four seaworthy cookie makers to reveal how sea creatures celebrate the season. The cookie maker who flounders will wash out of the workshop, while one cookie maker will reel in an advantage for the next challenge. Then, it's more festive fun in the sun as the cookie makers build 3D Christmas sandcastles, complete with crushed cookie sand. To give their cookies a taste of the tropics, they'll have to use papaya, mangoes, coconuts or guava. The cookie maker who crafts the jolliest Christmas sandcastle will swell with pride as they win $10,000 and the Golden Ornament.