Tokyo Disney Sea is a park themed unlike any other in Disney's worldwide catalog, but there are some areas that have Magic Kingdom parallels.  Port Discovery is sort of like an aquatic Tomorrowland. American Waterfront carries a certain Americana nostalgia similar to Main Street, U.S.A.  And Lost River Delta most certainly functions like a port version of Adventureland (and next door, Arabian Coast's desert oasis vibes harken to a small portion of Disneyland Paris' Adventureland).  Lost River Delta is also home to an Indiana Jones Adventure attraction, much like Disneyland Anaheim's Adventureland.  The jungle surroundings and exotic ambiance provide a fantastic sense of escapism, and scenes like the one below feel like they could be something straight out of Latin America.  It's part of what makes Tokyo Disney Sesa so unmistakably a "Sea of Dreams." A tropical watercraft scene from Lost River Delta, with Arabian Coast in the background.