Dive in for a great adventure 'Under the Sea' with the Castro family. Host Brandon Johnson brings his HGTV crew to the Castro home to create an underwater playland for two little mermaids, complete with a a new rock slide and a huge King Triton mural. In a My Yard Goes Disney, our designers create an underground viewing window so mom and dad can watch as their daughters swim and play. Plus, the family gets their own Caribbean style dining area and a pink clamshell cabana, inspired by Ariel's Undersea Adventure at Disneyland Resort's California Adventure park.